421496020 has 24 divisors (see below), whose sum is σ = 965609568. Its totient is φ = 153271200.

The previous prime is 421496003. The next prime is 421496021. The reversal of 421496020 is 20694124.

It is a self number, because there is not a number n which added to its sum of digits gives 421496020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421496021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 957726 + ... + 958165.

It is an arithmetic number, because the mean of its divisors is an integer number (40233732).

Almost surely, 2^421496020 is an apocalyptic number.

It is an amenable number.

421496020 is an abundant number, since it is smaller than the sum of its proper divisors (544113548).

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

421496020 is a wasteful number, since it uses less digits than its factorization.

421496020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1915911 (or 1915909 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 421496020 is about 20530.3682382952. The cubic root of 421496020 is about 749.7753519770.

The spelling of 421496020 in words is "four hundred twenty-one million, four hundred ninety-six thousand, twenty".