420403040 has 24 divisors (see below), whose sum is σ = 993202560. Its totient is φ = 168161152.

The previous prime is 420403031. The next prime is 420403057. The reversal of 420403040 is 40304024.

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, 1313600 + ... + 1313919.

It is an arithmetic number, because the mean of its divisors is an integer number (41383440).

Almost surely, 2^420403040 is an apocalyptic number.

420403040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

420403040 is an abundant number, since it is smaller than the sum of its proper divisors (572799520).

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

420403040 is a wasteful number, since it uses less digits than its factorization.

420403040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2627534 (or 2627526 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 420403040 is about 20503.7323431613. The cubic root of 420403040 is about 749.1267109571.

Adding to 420403040 its reverse (40304024), we get a palindrome (460707064).

The spelling of 420403040 in words is "four hundred twenty million, four hundred three thousand, forty".