42258564 has 24 divisors (see below), whose sum is σ = 109559520. Its totient is φ = 14086152.

The previous prime is 42258563. The next prime is 42258571. The reversal of 42258564 is 46585224.

It is a happy number.

42258564 is a `hidden beast` number, since 42 + 2 + 58 + 564 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (42258563) 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, 195534 + ... + 195749.

It is an arithmetic number, because the mean of its divisors is an integer number (4564980).

Almost surely, 2^42258564 is an apocalyptic number.

It is an amenable number.

42258564 is an abundant number, since it is smaller than the sum of its proper divisors (67300956).

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

42258564 is a wasteful number, since it uses less digits than its factorization.

42258564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391296 (or 391288 counting only the distinct ones).

The product of its digits is 76800, while the sum is 36.

The square root of 42258564 is about 6500.6587358513. The cubic root of 42258564 is about 348.3145194593.

The spelling of 42258564 in words is "forty-two million, two hundred fifty-eight thousand, five hundred sixty-four".