70138424 has 16 divisors (see below), whose sum is σ = 138431400. Its totient is φ = 33223392.

The previous prime is 70138423. The next prime is 70138441. The reversal of 70138424 is 42483107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70138423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230567 + ... + 230870.

Almost surely, 2^70138424 is an apocalyptic number.

It is an amenable number.

70138424 is a deficient number, since it is larger than the sum of its proper divisors (68292976).

70138424 is a wasteful number, since it uses less digits than its factorization.

70138424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461462 (or 461458 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 70138424 is about 8374.8685959841. The cubic root of 70138424 is about 412.4000105366.

The spelling of 70138424 in words is "seventy million, one hundred thirty-eight thousand, four hundred twenty-four".