70342457 has 4 divisors (see below), whose sum is σ = 70385700. Its totient is φ = 70299216.

The previous prime is 70342421. The next prime is 70342463. The reversal of 70342457 is 75424307.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12033961 + 58308496 = 3469^2 + 7636^2 .

It is a cyclic number.

It is not a de Polignac number, because 70342457 - 2²⁰ = 69293881 is a prime.

It is a super-2 number, since 2×70342457² = 9896122513593698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70342477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19082 + ... + 22467.

It is an arithmetic number, because the mean of its divisors is an integer number (17596425).

Almost surely, 2^70342457 is an apocalyptic number.

It is an amenable number.

70342457 is a deficient number, since it is larger than the sum of its proper divisors (43243).

70342457 is a wasteful number, since it uses less digits than its factorization.

70342457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43242.

The product of its (nonzero) digits is 23520, while the sum is 32.

The square root of 70342457 is about 8387.0410157576. The cubic root of 70342457 is about 412.7995145800.

The spelling of 70342457 in words is "seventy million, three hundred forty-two thousand, four hundred fifty-seven".