70368421 has 4 divisors (see below), whose sum is σ = 70451200. Its totient is φ = 70285644.

The previous prime is 70368407. The next prime is 70368427. The reversal of 70368421 is 12486307.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12486307 = 2269 ⋅5503.

It is a cyclic number.

It is not a de Polignac number, because 70368421 - 2²⁵ = 36813989 is a prime.

It is a super-3 number, since 3×70368421³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70368427) 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, 40101 + ... + 41818.

It is an arithmetic number, because the mean of its divisors is an integer number (17612800).

Almost surely, 2^70368421 is an apocalyptic number.

It is an amenable number.

70368421 is a deficient number, since it is larger than the sum of its proper divisors (82779).

70368421 is an equidigital number, since it uses as much as digits as its factorization.

70368421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82778.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 70368421 is about 8388.5887370880. The cubic root of 70368421 is about 412.8502976046.

The spelling of 70368421 in words is "seventy million, three hundred sixty-eight thousand, four hundred twenty-one".