421512672 has 48 divisors (see below), whose sum is σ = 1264540032. Its totient is φ = 120432000.

The previous prime is 421512667. The next prime is 421512691. The reversal of 421512672 is 276215124.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312954 + ... + 314297.

It is an arithmetic number, because the mean of its divisors is an integer number (26344584).

Almost surely, 2^421512672 is an apocalyptic number.

421512672 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

421512672 is an abundant number, since it is smaller than the sum of its proper divisors (843027360).

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

421512672 is a wasteful number, since it uses less digits than its factorization.

421512672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627271 (or 627263 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 421512672 is about 20530.7737798652. The cubic root of 421512672 is about 749.7852256129.

Adding to 421512672 its reverse (276215124), we get a palindrome (697727796).

The spelling of 421512672 in words is "four hundred twenty-one million, five hundred twelve thousand, six hundred seventy-two".