42678690 has 32 divisors (see below), whose sum is σ = 102871296. Its totient is φ = 11331840.

The previous prime is 42678689. The next prime is 42678697. The reversal of 42678690 is 9687624.

It is a super-2 number, since 2×42678690² = 3642941160232200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42678697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4279 + ... + 10181.

It is an arithmetic number, because the mean of its divisors is an integer number (3214728).

Almost surely, 2^42678690 is an apocalyptic number.

42678690 is an abundant number, since it is smaller than the sum of its proper divisors (60192606).

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

42678690 is a wasteful number, since it uses less digits than its factorization.

42678690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6154.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 42678690 is about 6532.8929273332. The cubic root of 42678690 is about 349.4650057779.

The spelling of 42678690 in words is "forty-two million, six hundred seventy-eight thousand, six hundred ninety".