420253420 has 12 divisors (see below), whose sum is σ = 882532224. Its totient is φ = 168101360.

The previous prime is 420253417. The next prime is 420253429. The reversal of 420253420 is 24352024.

It is a super-2 number, since 2×420253420² = 353225874043392800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 420253391 and 420253400.

It is not an unprimeable number, because it can be changed into a prime (420253429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10506316 + ... + 10506355.

It is an arithmetic number, because the mean of its divisors is an integer number (73544352).

Almost surely, 2^420253420 is an apocalyptic number.

It is an amenable number.

420253420 is an abundant number, since it is smaller than the sum of its proper divisors (462278804).

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

420253420 is a wasteful number, since it uses less digits than its factorization.

420253420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21012680 (or 21012678 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 420253420 is about 20500.0834144644. The cubic root of 420253420 is about 749.0378298697.

The spelling of 420253420 in words is "four hundred twenty million, two hundred fifty-three thousand, four hundred twenty".