70037421 has 4 divisors (see below), whose sum is σ = 93383232. Its totient is φ = 46691612.

The previous prime is 70037419. The next prime is 70037423. The reversal of 70037421 is 12473007.

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: 12473007 = 3 ⋅4157669.

It is an interprime number because it is at equal distance from previous prime (70037419) and next prime (70037423).

It is a cyclic number.

It is not a de Polignac number, because 70037421 - 2¹ = 70037419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70037391 and 70037400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70037423) 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, 11672901 + ... + 11672906.

It is an arithmetic number, because the mean of its divisors is an integer number (23345808).

Almost surely, 2^70037421 is an apocalyptic number.

It is an amenable number.

70037421 is a deficient number, since it is larger than the sum of its proper divisors (23345811).

70037421 is a wasteful number, since it uses less digits than its factorization.

70037421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23345810.

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 70037421 is about 8368.8362990323. The cubic root of 70037421 is about 412.2019562397.

The spelling of 70037421 in words is "seventy million, thirty-seven thousand, four hundred twenty-one".