420665454 has 48 divisors (see below), whose sum is σ = 1027536720. Its totient is φ = 127472400.

The previous prime is 420665447. The next prime is 420665461. The reversal of 420665454 is 454566024.

It is an interprime number because it is at equal distance from previous prime (420665447) and next prime (420665461).

It is a super-2 number, since 2×420665454² = 353918848378052232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25657 + ... + 38724.

It is an arithmetic number, because the mean of its divisors is an integer number (21407015).

Almost surely, 2^420665454 is an apocalyptic number.

420665454 is an abundant number, since it is smaller than the sum of its proper divisors (606871266).

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

420665454 is a wasteful number, since it uses less digits than its factorization.

420665454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64414 (or 64397 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

The square root of 420665454 is about 20510.1305212814. The cubic root of 420665454 is about 749.2825458983.

The spelling of 420665454 in words is "four hundred twenty million, six hundred sixty-five thousand, four hundred fifty-four".