420772937 has 8 divisors (see below), whose sum is σ = 460569480. Its totient is φ = 382037760.

The previous prime is 420772921. The next prime is 420772939. The reversal of 420772937 is 739277024.

It can be written as a sum of positive squares in 4 ways, for example, as 26512201 + 394260736 = 5149^2 + 19856^2 .

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

It is not a de Polignac number, because 420772937 - 2⁴ = 420772921 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420772894 and 420772903.

It is not an unprimeable number, because it can be changed into a prime (420772939) 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 7 ways as a sum of consecutive naturals, for example, 264512 + ... + 266097.

It is an arithmetic number, because the mean of its divisors is an integer number (57571185).

Almost surely, 2^420772937 is an apocalyptic number.

It is an amenable number.

420772937 is a deficient number, since it is larger than the sum of its proper divisors (39796543).

420772937 is a wasteful number, since it uses less digits than its factorization.

420772937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530683.

The product of its (nonzero) digits is 148176, while the sum is 41.

The square root of 420772937 is about 20512.7505956661. The cubic root of 420772937 is about 749.3463561280.

The spelling of 420772937 in words is "four hundred twenty million, seven hundred seventy-two thousand, nine hundred thirty-seven".