42368656 has 40 divisors (see below), whose sum is σ = 90913824. Its totient is φ = 18965760.

The previous prime is 42368653. The next prime is 42368659. The reversal of 42368656 is 65686324.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42368653) and next prime (42368659).

It is a super-2 number, since 2×42368656² = 3590206022492672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42368653) 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, 9996 + ... + 13588.

Almost surely, 2^42368656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42368656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45456912).

42368656 is an abundant number, since it is smaller than the sum of its proper divisors (48545168).

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

42368656 is a wasteful number, since it uses less digits than its factorization.

42368656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3679 (or 3673 counting only the distinct ones).

The product of its digits is 207360, while the sum is 40.

The square root of 42368656 is about 6509.1209852022. The cubic root of 42368656 is about 348.6167334671.

The spelling of 42368656 in words is "forty-two million, three hundred sixty-eight thousand, six hundred fifty-six".