420637340 has 24 divisors (see below), whose sum is σ = 921745440. Its totient is φ = 160939328.

The previous prime is 420637339. The next prime is 420637361. The reversal of 420637340 is 43736024.

It is a happy number.

420637340 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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, 456755 + ... + 457674.

It is an arithmetic number, because the mean of its divisors is an integer number (38406060).

Almost surely, 2^420637340 is an apocalyptic number.

It is an amenable number.

420637340 is an abundant number, since it is smaller than the sum of its proper divisors (501108100).

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

420637340 is a wasteful number, since it uses less digits than its factorization.

420637340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914461 (or 914459 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 29.

The square root of 420637340 is about 20509.4451412026. The cubic root of 420637340 is about 749.2658534581.

The spelling of 420637340 in words is "four hundred twenty million, six hundred thirty-seven thousand, three hundred forty".