420922139 has 8 divisors (see below), whose sum is σ = 463401840. Its totient is φ = 379144800.

The previous prime is 420922111. The next prime is 420922157. The reversal of 420922139 is 931229024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 420922139 - 2²⁸ = 152486683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420922199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174332 + ... + 176729.

It is an arithmetic number, because the mean of its divisors is an integer number (57925230).

Almost surely, 2^420922139 is an apocalyptic number.

420922139 is a deficient number, since it is larger than the sum of its proper divisors (42479701).

420922139 is a wasteful number, since it uses less digits than its factorization.

420922139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351181.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 420922139 is about 20516.3870844747. The cubic root of 420922139 is about 749.4349159766.

The spelling of 420922139 in words is "four hundred twenty million, nine hundred twenty-two thousand, one hundred thirty-nine".