70421307 has 16 divisors (see below), whose sum is σ = 102685440. Its totient is φ = 42573600.

The previous prime is 70421291. The next prime is 70421317. The reversal of 70421307 is 70312407.

It is not a de Polignac number, because 70421307 - 2⁴ = 70421291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70421317) 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 15 ways as a sum of consecutive naturals, for example, 12057 + ... + 16917.

It is an arithmetic number, because the mean of its divisors is an integer number (6417840).

Almost surely, 2^70421307 is an apocalyptic number.

70421307 is a deficient number, since it is larger than the sum of its proper divisors (32264133).

70421307 is a wasteful number, since it uses less digits than its factorization.

70421307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5314.

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

The square root of 70421307 is about 8391.7404035158. The cubic root of 70421307 is about 412.9536987845.

Subtracting from 70421307 its reverse (70312407), we obtain a square (108900 = 330²).

The spelling of 70421307 in words is "seventy million, four hundred twenty-one thousand, three hundred seven".