70642135 has 4 divisors (see below), whose sum is σ = 84770568. Its totient is φ = 56513704.

The previous prime is 70642129. The next prime is 70642147. The reversal of 70642135 is 53124607.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70642135 is a prime.

It is a super-2 number, since 2×70642135² = 9980622474716450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7064209 + ... + 7064218.

It is an arithmetic number, because the mean of its divisors is an integer number (21192642).

Almost surely, 2^70642135 is an apocalyptic number.

70642135 is a deficient number, since it is larger than the sum of its proper divisors (14128433).

70642135 is a wasteful number, since it uses less digits than its factorization.

70642135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14128432.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 70642135 is about 8404.8875661724. The cubic root of 70642135 is about 413.3848968074.

The spelling of 70642135 in words is "seventy million, six hundred forty-two thousand, one hundred thirty-five".