42561512 has 32 divisors (see below), whose sum is σ = 94149120. Its totient is φ = 17651520.

The previous prime is 42561511. The next prime is 42561517. The reversal of 42561512 is 21516524.

It is a super-2 number, since 2×42561512² = 3622964607452288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42561511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10523 + ... + 13994.

It is an arithmetic number, because the mean of its divisors is an integer number (2942160).

Almost surely, 2^42561512 is an apocalyptic number.

It is an amenable number.

42561512 is an abundant number, since it is smaller than the sum of its proper divisors (51587608).

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

42561512 is a wasteful number, since it uses less digits than its factorization.

42561512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24561 (or 24557 counting only the distinct ones).

The product of its digits is 2400, while the sum is 26.

The square root of 42561512 is about 6523.9184544260. The cubic root of 42561512 is about 349.1448839200.

The spelling of 42561512 in words is "forty-two million, five hundred sixty-one thousand, five hundred twelve".