42670678 has 4 divisors (see below), whose sum is σ = 64006020. Its totient is φ = 21335338.

The previous prime is 42670673. The next prime is 42670699. The reversal of 42670678 is 87607624.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 42670678.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42670673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10667668 + ... + 10667671.

It is an arithmetic number, because the mean of its divisors is an integer number (16001505).

Almost surely, 2^42670678 is an apocalyptic number.

42670678 is a deficient number, since it is larger than the sum of its proper divisors (21335342).

42670678 is a wasteful number, since it uses less digits than its factorization.

42670678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21335341.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 42670678 is about 6532.2796939507. The cubic root of 42670678 is about 349.4431362465.

The spelling of 42670678 in words is "forty-two million, six hundred seventy thousand, six hundred seventy-eight".