42056667 has 6 divisors (see below), whose sum is σ = 60748532. Its totient is φ = 28037772.

The previous prime is 42056659. The next prime is 42056711. The reversal of 42056667 is 76665024.

It is not a de Polignac number, because 42056667 - 2³ = 42056659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42056767) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2336473 + ... + 2336490.

Almost surely, 2^42056667 is an apocalyptic number.

42056667 is a deficient number, since it is larger than the sum of its proper divisors (18691865).

42056667 is a wasteful number, since it uses less digits than its factorization.

42056667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4672969 (or 4672966 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 42056667 is about 6485.1111786923. Note that the first 4 decimals coincide. The cubic root of 42056667 is about 347.7589243939.

The spelling of 42056667 in words is "forty-two million, fifty-six thousand, six hundred sixty-seven".