421503416 has 8 divisors (see below), whose sum is σ = 790318920. Its totient is φ = 210751704.

The previous prime is 421503413. The next prime is 421503449. The reversal of 421503416 is 614305124.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421503413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26343956 + ... + 26343971.

It is an arithmetic number, because the mean of its divisors is an integer number (98789865).

Almost surely, 2^421503416 is an apocalyptic number.

It is an amenable number.

421503416 is a deficient number, since it is larger than the sum of its proper divisors (368815504).

421503416 is a wasteful number, since it uses less digits than its factorization.

421503416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52687933 (or 52687929 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 421503416 is about 20530.5483609182. The cubic root of 421503416 is about 749.7797373929.

The spelling of 421503416 in words is "four hundred twenty-one million, five hundred three thousand, four hundred sixteen".