42450656 has 24 divisors (see below), whose sum is σ = 86272704. Its totient is φ = 20540160.

The previous prime is 42450643. The next prime is 42450659. The reversal of 42450656 is 65605424.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42450659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20405 + ... + 22388.

It is an arithmetic number, because the mean of its divisors is an integer number (3594696).

Almost surely, 2^42450656 is an apocalyptic number.

It is an amenable number.

42450656 is an abundant number, since it is smaller than the sum of its proper divisors (43822048).

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

42450656 is a wasteful number, since it uses less digits than its factorization.

42450656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42834 (or 42826 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 42450656 is about 6515.4167940355. The cubic root of 42450656 is about 348.8414919919.

The spelling of 42450656 in words is "forty-two million, four hundred fifty thousand, six hundred fifty-six".