421910273904 has 160 divisors (see below), whose sum is σ = 1274997252096. Its totient is φ = 117736523520.

The previous prime is 421910273903. The next prime is 421910273909. The reversal of 421910273904 is 409372019124.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421910273903) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2469949 + ... + 2635235.

Almost surely, 2^421910273904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421910273904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (637498626048).

421910273904 is an abundant number, since it is smaller than the sum of its proper divisors (853086978192).

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

421910273904 is a wasteful number, since it uses less digits than its factorization.

421910273904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165483 (or 165477 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The spelling of 421910273904 in words is "four hundred twenty-one billion, nine hundred ten million, two hundred seventy-three thousand, nine hundred four".