42645092 has 18 divisors (see below), whose sum is σ = 86813622. Its totient is φ = 18276384.

The previous prime is 42645091. The next prime is 42645107. The reversal of 42645092 is 29054624.

It can be written as a sum of positive squares in only one way, i.e., 33918976 + 8726116 = 5824^2 + 2954^2 .

It is not an unprimeable number, because it can be changed into a prime (42645091) 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, 108593 + ... + 108984.

It is an arithmetic number, because the mean of its divisors is an integer number (4822979).

Almost surely, 2^42645092 is an apocalyptic number.

It is an amenable number.

42645092 is an abundant number, since it is smaller than the sum of its proper divisors (44168530).

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

42645092 is a wasteful number, since it uses less digits than its factorization.

42645092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217595 (or 217586 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 42645092 is about 6530.3209722034. The cubic root of 42645092 is about 349.3732784415.

The spelling of 42645092 in words is "forty-two million, six hundred forty-five thousand, ninety-two".