420661377 has 16 divisors (see below), whose sum is σ = 627756480. Its totient is φ = 278391456.

The previous prime is 420661369. The next prime is 420661427. The reversal of 420661377 is 773166024.

It is not a de Polignac number, because 420661377 - 2³ = 420661369 is a prime.

It is a super-2 number, since 2×420661377² = 353911988199072258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (420661337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53163 + ... + 60560.

It is an arithmetic number, because the mean of its divisors is an integer number (39234780).

Almost surely, 2^420661377 is an apocalyptic number.

It is an amenable number.

420661377 is a deficient number, since it is larger than the sum of its proper divisors (207095103).

420661377 is a wasteful number, since it uses less digits than its factorization.

420661377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113869 (or 113863 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 420661377 is about 20510.0311311319. The cubic root of 420661377 is about 749.2801252615.

The spelling of 420661377 in words is "four hundred twenty million, six hundred sixty-one thousand, three hundred seventy-seven".