70373421 has 16 divisors (see below), whose sum is σ = 110390400. Its totient is φ = 44155584.

The previous prime is 70373419. The next prime is 70373447. The reversal of 70373421 is 12437307.

It is not a de Polignac number, because 70373421 - 2¹ = 70373419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70373461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76201 + ... + 77118.

It is an arithmetic number, because the mean of its divisors is an integer number (6899400).

Almost surely, 2^70373421 is an apocalyptic number.

It is an amenable number.

70373421 is a deficient number, since it is larger than the sum of its proper divisors (40016979).

70373421 is a wasteful number, since it uses less digits than its factorization.

70373421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153345 (or 153339 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 70373421 is about 8388.8867557025. The cubic root of 70373421 is about 412.8600756773.

The spelling of 70373421 in words is "seventy million, three hundred seventy-three thousand, four hundred twenty-one".