70142745 has 16 divisors (see below), whose sum is σ = 112461120. Its totient is φ = 37331904.

The previous prime is 70142729. The next prime is 70142777. The reversal of 70142745 is 54724107.

It is not a de Polignac number, because 70142745 - 2⁴ = 70142729 is a prime.

It is a super-2 number, since 2×70142745² = 9840009352270050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3042 + ... + 12228.

It is an arithmetic number, because the mean of its divisors is an integer number (7028820).

Almost surely, 2^70142745 is an apocalyptic number.

It is an amenable number.

70142745 is a deficient number, since it is larger than the sum of its proper divisors (42318375).

70142745 is a wasteful number, since it uses less digits than its factorization.

70142745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9704.

The product of its (nonzero) digits is 7840, while the sum is 30.

The square root of 70142745 is about 8375.1265662078. The cubic root of 70142745 is about 412.4084792368.

The spelling of 70142745 in words is "seventy million, one hundred forty-two thousand, seven hundred forty-five".