420637204 has 24 divisors (see below), whose sum is σ = 812078568. Its totient is φ = 189404160.

The previous prime is 420637187. The next prime is 420637207. The reversal of 420637204 is 402736024.

It can be written as a sum of positive squares in 4 ways, for example, as 56972304 + 363664900 = 7548^2 + 19070^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420637207) 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 7 ways as a sum of consecutive naturals, for example, 96517 + ... + 100780.

It is an arithmetic number, because the mean of its divisors is an integer number (33836607).

Almost surely, 2^420637204 is an apocalyptic number.

It is an amenable number.

420637204 is a deficient number, since it is larger than the sum of its proper divisors (391441364).

420637204 is a wasteful number, since it uses less digits than its factorization.

420637204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197355 (or 197353 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 420637204 is about 20509.4418256568. The cubic root of 420637204 is about 749.2657727075.

It can be divided in two parts, 420 and 637204, that multiplied together give a triangular number (267625680 = T₂₃₁₃₅).

The spelling of 420637204 in words is "four hundred twenty million, six hundred thirty-seven thousand, two hundred four".