42790688 has 12 divisors (see below), whose sum is σ = 84244230. Its totient is φ = 21395328.

The previous prime is 42790673. The next prime is 42790703. The reversal of 42790688 is 88609724.

It is an interprime number because it is at equal distance from previous prime (42790673) and next prime (42790703).

It can be written as a sum of positive squares in only one way, i.e., 39790864 + 2999824 = 6308^2 + 1732^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 668573 + ... + 668636.

Almost surely, 2^42790688 is an apocalyptic number.

It is an amenable number.

42790688 is a deficient number, since it is larger than the sum of its proper divisors (41453542).

42790688 is a wasteful number, since it uses less digits than its factorization.

42790688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337219 (or 1337211 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 42790688 is about 6541.4591644372. The cubic root of 42790688 is about 349.7704290453.

The spelling of 42790688 in words is "forty-two million, seven hundred ninety thousand, six hundred eighty-eight".