42687256 has 16 divisors (see below), whose sum is σ = 80110800. Its totient is φ = 21324384.

The previous prime is 42687209. The next prime is 42687269. The reversal of 42687256 is 65278624.

It is a super-3 number, since 3×42687256³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12325 + ... + 15403.

It is an arithmetic number, because the mean of its divisors is an integer number (5006925).

Almost surely, 2^42687256 is an apocalyptic number.

It is an amenable number.

42687256 is a deficient number, since it is larger than the sum of its proper divisors (37423544).

42687256 is a wasteful number, since it uses less digits than its factorization.

42687256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4818 (or 4814 counting only the distinct ones).

The product of its digits is 161280, while the sum is 40.

The square root of 42687256 is about 6533.5484998583. The cubic root of 42687256 is about 349.4883844788.

The spelling of 42687256 in words is "forty-two million, six hundred eighty-seven thousand, two hundred fifty-six".