421303516 has 12 divisors (see below), whose sum is σ = 761064640. Its totient is φ = 203856480.

The previous prime is 421303507. The next prime is 421303517. The reversal of 421303516 is 615303124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421303517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1698681 + ... + 1698928.

Almost surely, 2^421303516 is an apocalyptic number.

It is an amenable number.

421303516 is a deficient number, since it is larger than the sum of its proper divisors (339761124).

421303516 is a wasteful number, since it uses less digits than its factorization.

421303516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3397644 (or 3397642 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 421303516 is about 20525.6794284623. The cubic root of 421303516 is about 749.6611897814.

The spelling of 421303516 in words is "four hundred twenty-one million, three hundred three thousand, five hundred sixteen".