420156277947 has 24 divisors (see below), whose sum is σ = 730096124160. Its totient is φ = 227453022000.

The previous prime is 420156277939. The next prime is 420156277949. The reversal of 420156277947 is 749772651024.

420156277947 is a `hidden beast` number, since 4 + 2 + 0 + 1 + 5 + 627 + 7 + 9 + 4 + 7 = 666.

It is not a de Polignac number, because 420156277947 - 2³ = 420156277939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420156277893 and 420156277902.

It is not an unprimeable number, because it can be changed into a prime (420156277949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 175502679 + ... + 175505072.

It is an arithmetic number, because the mean of its divisors is an integer number (30420671840).

Almost surely, 2^420156277947 is an apocalyptic number.

420156277947 is a deficient number, since it is larger than the sum of its proper divisors (309939846213).

420156277947 is a wasteful number, since it uses less digits than its factorization.

420156277947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351007783 (or 351007780 counting only the distinct ones).

The product of its (nonzero) digits is 5927040, while the sum is 54.

The spelling of 420156277947 in words is "four hundred twenty billion, one hundred fifty-six million, two hundred seventy-seven thousand, nine hundred forty-seven".