Search a number
-
+
130213242 = 2327234069
BaseRepresentation
bin1111100001011…
…10010101111010
3100002000111222200
413300232111322
5231313310432
620530531030
73140536305
oct760562572
9302014880
10130213242
1167558155
1237736a76
1320c91873
1413417b3c
15b671a7c
hex7c2e57a

130213242 has 12 divisors (see below), whose sum is σ = 282128730. Its totient is φ = 43404408.

The previous prime is 130213241. The next prime is 130213273. The reversal of 130213242 is 242312031.

It can be written as a sum of positive squares in only one way, i.e., 130165281 + 47961 = 11409^2 + 219^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 7234069 = 130213242 / (1 + 3 + 0 + 2 + 1 + 3 + 2 + 4 + 2).

It is not an unprimeable number, because it can be changed into a prime (130213241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3617017 + ... + 3617052.

Almost surely, 2130213242 is an apocalyptic number.

130213242 is an abundant number, since it is smaller than the sum of its proper divisors (151915488).

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

130213242 is a wasteful number, since it uses less digits than its factorization.

130213242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7234077 (or 7234074 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 130213242 is about 11411.1016996607. The cubic root of 130213242 is about 506.8565353916.

Adding to 130213242 its reverse (242312031), we get a palindrome (372525273).

The spelling of 130213242 in words is "one hundred thirty million, two hundred thirteen thousand, two hundred forty-two".

Divisors: 1 2 3 6 9 18 7234069 14468138 21702207 43404414 65106621 130213242