420237620 has 48 divisors (see below), whose sum is σ = 1019366208. Its totient is φ = 143823360.

The previous prime is 420237617. The next prime is 420237647. The reversal of 420237620 is 26732024.

It is a self number, because there is not a number n which added to its sum of digits gives 420237620.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 52442 + ... + 59921.

It is an arithmetic number, because the mean of its divisors is an integer number (21236796).

Almost surely, 2^420237620 is an apocalyptic number.

It is an amenable number.

420237620 is an abundant number, since it is smaller than the sum of its proper divisors (599128588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420237620 is a wasteful number, since it uses less digits than its factorization.

420237620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112400 (or 112398 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 420237620 is about 20499.6980465567. The cubic root of 420237620 is about 749.0284427195.

Adding to 420237620 its reverse (26732024), we get a palindrome (446969644).

The spelling of 420237620 in words is "four hundred twenty million, two hundred thirty-seven thousand, six hundred twenty".