421815468 has 12 divisors (see below), whose sum is σ = 984236120. Its totient is φ = 140605152.

The previous prime is 421815467. The next prime is 421815497. The reversal of 421815468 is 864518124.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (421815463) 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, 17575633 + ... + 17575656.

Almost surely, 2^421815468 is an apocalyptic number.

It is an amenable number.

421815468 is an abundant number, since it is smaller than the sum of its proper divisors (562420652).

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

421815468 is a wasteful number, since it uses less digits than its factorization.

421815468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35151296 (or 35151294 counting only the distinct ones).

The product of its digits is 61440, while the sum is 39.

The square root of 421815468 is about 20538.1466544574. The cubic root of 421815468 is about 749.9647201182.

The spelling of 421815468 in words is "four hundred twenty-one million, eight hundred fifteen thousand, four hundred sixty-eight".