421253340 has 24 divisors (see below), whose sum is σ = 1179509520. Its totient is φ = 112334208.

The previous prime is 421253309. The next prime is 421253401. The reversal of 421253340 is 43352124.

It is a super-2 number, since 2×421253340² = 354908752922311200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 421253340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3510385 + ... + 3510504.

It is an arithmetic number, because the mean of its divisors is an integer number (49146230).

Almost surely, 2^421253340 is an apocalyptic number.

It is an amenable number.

421253340 is an abundant number, since it is smaller than the sum of its proper divisors (758256180).

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

421253340 is a wasteful number, since it uses less digits than its factorization.

421253340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7020901 (or 7020899 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 421253340 is about 20524.4571182772. The cubic root of 421253340 is about 749.6314277913.

The spelling of 421253340 in words is "four hundred twenty-one million, two hundred fifty-three thousand, three hundred forty".