420287939930 has 16 divisors (see below), whose sum is σ = 756547702344. Its totient is φ = 168108640320.

The previous prime is 420287939927. The next prime is 420287939999. The reversal of 420287939930 is 39939782024.

It can be written as a sum of positive squares in 4 ways, for example, as 418574062729 + 1713877201 = 646973^2 + 41399^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 542477 + ... + 1065296.

Almost surely, 2^420287939930 is an apocalyptic number.

420287939930 is a deficient number, since it is larger than the sum of its proper divisors (336259762414).

420287939930 is a wasteful number, since it uses less digits than its factorization.

420287939930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1633921.

The product of its (nonzero) digits is 5878656, while the sum is 56.

The spelling of 420287939930 in words is "four hundred twenty billion, two hundred eighty-seven million, nine hundred thirty-nine thousand, nine hundred thirty".