42513656 has 8 divisors (see below), whose sum is σ = 79713120. Its totient is φ = 21256824.

The previous prime is 42513643. The next prime is 42513661. The reversal of 42513656 is 65631524.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2657096 + ... + 2657111.

It is an arithmetic number, because the mean of its divisors is an integer number (9964140).

Almost surely, 2^42513656 is an apocalyptic number.

It is an amenable number.

42513656 is a deficient number, since it is larger than the sum of its proper divisors (37199464).

42513656 is a wasteful number, since it uses less digits than its factorization.

42513656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5314213 (or 5314209 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

The square root of 42513656 is about 6520.2496884705. The cubic root of 42513656 is about 349.0139757897.

The spelling of 42513656 in words is "forty-two million, five hundred thirteen thousand, six hundred fifty-six".