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6121420 = 2251989181
BaseRepresentation
bin10111010110011111001100
3102112000000021
4113112133030
53031341140
6335111524
7103013464
oct27263714
912460007
106121420
113501128
1220725a4
131364356
14b54ba4
1580db4a
hex5d67cc

6121420 has 48 divisors (see below), whose sum is σ = 13759200. Its totient is φ = 2280960.

The previous prime is 6121417. The next prime is 6121429. The reversal of 6121420 is 241216.

It is a junction number, because it is equal to n+sod(n) for n = 6121394 and 6121403.

It is not an unprimeable number, because it can be changed into a prime (6121429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33730 + ... + 33910.

It is an arithmetic number, because the mean of its divisors is an integer number (286650).

Almost surely, 26121420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6121420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6879600).

6121420 is an abundant number, since it is smaller than the sum of its proper divisors (7637780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6121420 is a wasteful number, since it uses less digits than its factorization.

6121420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298 (or 296 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 6121420 is about 2474.1503592142. The cubic root of 6121420 is about 182.9296314396.

Adding to 6121420 its reverse (241216), we get a palindrome (6362636).

The spelling of 6121420 in words is "six million, one hundred twenty-one thousand, four hundred twenty".

Divisors: 1 2 4 5 10 19 20 38 76 89 95 178 181 190 356 362 380 445 724 890 905 1691 1780 1810 3382 3439 3620 6764 6878 8455 13756 16109 16910 17195 32218 33820 34390 64436 68780 80545 161090 306071 322180 612142 1224284 1530355 3060710 6121420