42688534 has 8 divisors (see below), whose sum is σ = 73180368. Its totient is φ = 18295080.

The previous prime is 42688511. The next prime is 42688553. The reversal of 42688534 is 43588624.

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

It is a super-3 number, since 3×42688534³ (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, 1524577 + ... + 1524604.

It is an arithmetic number, because the mean of its divisors is an integer number (9147546).

Almost surely, 2^42688534 is an apocalyptic number.

42688534 is a deficient number, since it is larger than the sum of its proper divisors (30491834).

42688534 is a wasteful number, since it uses less digits than its factorization.

42688534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3049190.

The product of its digits is 184320, while the sum is 40.

The square root of 42688534 is about 6533.6463020277. The cubic root of 42688534 is about 349.4918721840.

The spelling of 42688534 in words is "forty-two million, six hundred eighty-eight thousand, five hundred thirty-four".