421724237072 has 20 divisors (see below), whose sum is σ = 819405424860. Its totient is φ = 210264772608.

The previous prime is 421724236939. The next prime is 421724237087. The reversal of 421724237072 is 270732427124.

It can be written as a sum of positive squares in 2 ways, for example, as 304311102736 + 117413134336 = 551644^2 + 342656^2 .

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, 37328297 + ... + 37339592.

It is an arithmetic number, because the mean of its divisors is an integer number (40970271243).

Almost surely, 2^421724237072 is an apocalyptic number.

It is an amenable number.

421724237072 is a deficient number, since it is larger than the sum of its proper divisors (397681187788).

421724237072 is a wasteful number, since it uses less digits than its factorization.

421724237072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74668250 (or 74668244 counting only the distinct ones).

The product of its (nonzero) digits is 263424, while the sum is 41.

The spelling of 421724237072 in words is "four hundred twenty-one billion, seven hundred twenty-four million, two hundred thirty-seven thousand, seventy-two".