421918092 has 48 divisors (see below), whose sum is σ = 1095818080. Its totient is φ = 140387904.

The previous prime is 421918061. The next prime is 421918093. The reversal of 421918092 is 290819124.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (421918093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63018 + ... + 69390.

Almost surely, 2^421918092 is an apocalyptic number.

It is an amenable number.

421918092 is an abundant number, since it is smaller than the sum of its proper divisors (673899988).

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

421918092 is a wasteful number, since it uses less digits than its factorization.

421918092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6999 (or 6991 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 421918092 is about 20540.6448779000. The cubic root of 421918092 is about 750.0255351306.

The spelling of 421918092 in words is "four hundred twenty-one million, nine hundred eighteen thousand, ninety-two".