70142738 has 8 divisors (see below), whose sum is σ = 105324732. Its totient is φ = 35034496.

The previous prime is 70142729. The next prime is 70142777. The reversal of 70142738 is 83724107.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 61575409 + 8567329 = 7847^2 + 2927^2 .

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, 15995 + ... + 19902.

Almost surely, 2^70142738 is an apocalyptic number.

70142738 is a deficient number, since it is larger than the sum of its proper divisors (35181994).

70142738 is a wasteful number, since it uses less digits than its factorization.

70142738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36876.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 70142738 is about 8375.1261483037. The cubic root of 70142738 is about 412.4084655178.

The spelling of 70142738 in words is "seventy million, one hundred forty-two thousand, seven hundred thirty-eight".