421169472 has 168 divisors, whose sum is σ = 1263741440. Its totient is φ = 133954560.

The previous prime is 421169467. The next prime is 421169519. The reversal of 421169472 is 274961124.

It is a happy number.

421169472 is a `hidden beast` number, since 4 + 21 + 169 + 472 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1839054 + ... + 1839282.

Almost surely, 2^421169472 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 421169472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (631870720).

421169472 is an abundant number, since it is smaller than the sum of its proper divisors (842571968).

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

421169472 is a wasteful number, since it uses less digits than its factorization.

421169472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381 (or 368 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 421169472 is about 20522.4138931072. The cubic root of 421169472 is about 749.5816760501.

The spelling of 421169472 in words is "four hundred twenty-one million, one hundred sixty-nine thousand, four hundred seventy-two".