420138366 has 8 divisors (see below), whose sum is σ = 840276744. Its totient is φ = 140046120.

The previous prime is 420138269. The next prime is 420138371. The reversal of 420138366 is 663831024.

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

420138366 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35011525 + ... + 35011536.

It is an arithmetic number, because the mean of its divisors is an integer number (105034593).

Almost surely, 2^420138366 is an apocalyptic number.

420138366 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

420138366 is a wasteful number, since it uses less digits than its factorization.

420138366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70023066.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 420138366 is about 20497.2770386703. The cubic root of 420138366 is about 748.9694682097.

The spelling of 420138366 in words is "four hundred twenty million, one hundred thirty-eight thousand, three hundred sixty-six".