421790471972 has 24 divisors (see below), whose sum is σ = 744718523136. Its totient is φ = 209014017408.

The previous prime is 421790471959. The next prime is 421790472041. The reversal of 421790471972 is 279174097124.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9081473 + ... + 9127799.

It is an arithmetic number, because the mean of its divisors is an integer number (31029938464).

Almost surely, 2^421790471972 is an apocalyptic number.

It is an amenable number.

421790471972 is a deficient number, since it is larger than the sum of its proper divisors (322928051164).

421790471972 is a wasteful number, since it uses less digits than its factorization.

421790471972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66587 (or 66585 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 53.

The spelling of 421790471972 in words is "four hundred twenty-one billion, seven hundred ninety million, four hundred seventy-one thousand, nine hundred seventy-two".