70042738 has 8 divisors (see below), whose sum is σ = 106632432. Its totient is φ = 34498596.

The previous prime is 70042727. The next prime is 70042741. The reversal of 70042738 is 83724007.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261220 + ... + 261487.

It is an arithmetic number, because the mean of its divisors is an integer number (13329054).

Almost surely, 2^70042738 is an apocalyptic number.

70042738 is a deficient number, since it is larger than the sum of its proper divisors (36589694).

70042738 is a wasteful number, since it uses less digits than its factorization.

70042738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522776.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 70042738 is about 8369.1539596306. The cubic root of 70042738 is about 412.2123869605.

The spelling of 70042738 in words is "seventy million, forty-two thousand, seven hundred thirty-eight".