42656319 has 12 divisors (see below), whose sum is σ = 61684896. Its totient is φ = 28405152.

The previous prime is 42656297. The next prime is 42656321. The reversal of 42656319 is 91365624.

It is a happy number.

It is not a de Polignac number, because 42656319 - 2⁹ = 42655807 is a prime.

It is a super-2 number, since 2×42656319² = 3639123101259522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42656389) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7779 + ... + 12075.

It is an arithmetic number, because the mean of its divisors is an integer number (5140408).

Almost surely, 2^42656319 is an apocalyptic number.

42656319 is a deficient number, since it is larger than the sum of its proper divisors (19028577).

42656319 is a wasteful number, since it uses less digits than its factorization.

42656319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5406 (or 5403 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 42656319 is about 6531.1805211615. The cubic root of 42656319 is about 349.4039351123.

The spelling of 42656319 in words is "forty-two million, six hundred fifty-six thousand, three hundred nineteen".