421043952 has 160 divisors (see below), whose sum is σ = 1323486720. Its totient is φ = 112665600.

The previous prime is 421043939. The next prime is 421043993. The reversal of 421043952 is 259340124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 644458 + ... + 645110.

It is an arithmetic number, because the mean of its divisors is an integer number (8271792).

Almost surely, 2^421043952 is an apocalyptic number.

421043952 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421043952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (661743360).

421043952 is an abundant number, since it is smaller than the sum of its proper divisors (902442768).

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

421043952 is a wasteful number, since it uses less digits than its factorization.

421043952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791 (or 785 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 421043952 is about 20519.3555454356. The cubic root of 421043952 is about 749.5072033840.

It can be divided in two parts, 42104 and 3952, that added together give a triangular number (46056 = T₃₀₃).

The spelling of 421043952 in words is "four hundred twenty-one million, forty-three thousand, nine hundred fifty-two".