421727942474 has 4 divisors (see below), whose sum is σ = 632591913714. Its totient is φ = 210863971236.

The previous prime is 421727942473. The next prime is 421727942479. The reversal of 421727942474 is 474249727124.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 229099121449 + 192628821025 = 478643^2 + 438895^2 .

It is not an unprimeable number, because it can be changed into a prime (421727942473) by changing a digit.

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 as a sum of consecutive naturals, namely, 105431985617 + ... + 105431985620.

Almost surely, 2^421727942474 is an apocalyptic number.

421727942474 is a deficient number, since it is larger than the sum of its proper divisors (210863971240).

421727942474 is a wasteful number, since it uses less digits than its factorization.

421727942474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210863971239.

The product of its digits is 6322176, while the sum is 53.

The spelling of 421727942474 in words is "four hundred twenty-one billion, seven hundred twenty-seven million, nine hundred forty-two thousand, four hundred seventy-four".