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421140 = 22357019
BaseRepresentation
bin1100110110100010100
3210101200210
41212310110
5101434030
613005420
73402546
oct1466424
9711623
10421140
11268455
12183870
131198c5
14ad696
1584bb0
hex66d14

421140 has 24 divisors (see below), whose sum is σ = 1179360. Its totient is φ = 112288.

The previous prime is 421133. The next prime is 421147. The reversal of 421140 is 41124.

It is an interprime number because it is at equal distance from previous prime (421133) and next prime (421147).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421147) by changing a digit.

421140 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3450 + ... + 3569.

It is an arithmetic number, because the mean of its divisors is an integer number (49140).

2421140 is an apocalyptic number.

It is an amenable number.

421140 is an abundant number, since it is smaller than the sum of its proper divisors (758220).

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

421140 is a wasteful number, since it uses less digits than its factorization.

421140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7031 (or 7029 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 421140 is about 648.9530029209. The cubic root of 421140 is about 74.9564191254.

Adding to 421140 its reverse (41124), we get a palindrome (462264).

It can be divided in two parts, 421 and 140, that added together give a triangular number (561 = T33).

The spelling of 421140 in words is "four hundred twenty-one thousand, one hundred forty", and thus it is an iban number.

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 7019 14038 21057 28076 35095 42114 70190 84228 105285 140380 210570 421140