421972496 has 120 divisors (see below), whose sum is σ = 949939200. Its totient is φ = 181209600.

The previous prime is 421972493. The next prime is 421972519. The reversal of 421972496 is 694279124.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (421972493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4741220 + ... + 4741308.

It is an arithmetic number, because the mean of its divisors is an integer number (7916160).

Almost surely, 2^421972496 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 421972496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (474969600).

421972496 is an abundant number, since it is smaller than the sum of its proper divisors (527966704).

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

421972496 is a wasteful number, since it uses less digits than its factorization.

421972496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229 (or 212 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The square root of 421972496 is about 20541.9691363803. The cubic root of 421972496 is about 750.0577709573.

The spelling of 421972496 in words is "four hundred twenty-one million, nine hundred seventy-two thousand, four hundred ninety-six".