42756738 has 8 divisors (see below), whose sum is σ = 85513488. Its totient is φ = 14252244.

The previous prime is 42756737. The next prime is 42756797. The reversal of 42756738 is 83765724.

It is a sphenic number, since it is the product of 3 distinct primes.

42756738 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 42756738.

It is not an unprimeable number, because it can be changed into a prime (42756733) 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, 3563056 + ... + 3563067.

It is an arithmetic number, because the mean of its divisors is an integer number (10689186).

Almost surely, 2^42756738 is an apocalyptic number.

42756738 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

42756738 is a wasteful number, since it uses less digits than its factorization.

42756738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7126128.

The product of its digits is 282240, while the sum is 42.

The square root of 42756738 is about 6538.8636627475. The cubic root of 42756738 is about 349.6779023106.

The spelling of 42756738 in words is "forty-two million, seven hundred fifty-six thousand, seven hundred thirty-eight".