421503352 has 8 divisors (see below), whose sum is σ = 790318800. Its totient is φ = 210751672.

The previous prime is 421503349. The next prime is 421503413. The reversal of 421503352 is 253305124.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26343952 + ... + 26343967.

It is an arithmetic number, because the mean of its divisors is an integer number (98789850).

Almost surely, 2^421503352 is an apocalyptic number.

It is an amenable number.

421503352 is a deficient number, since it is larger than the sum of its proper divisors (368815448).

421503352 is a wasteful number, since it uses less digits than its factorization.

421503352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52687925 (or 52687921 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 421503352 is about 20530.5468022652. The cubic root of 421503352 is about 749.7796994447.

Adding to 421503352 its reverse (253305124), we get a palindrome (674808476).

The spelling of 421503352 in words is "four hundred twenty-one million, five hundred three thousand, three hundred fifty-two".