421538732 has 12 divisors (see below), whose sum is σ = 781086600. Its totient is φ = 198371136.

The previous prime is 421538717. The next prime is 421538759. The reversal of 421538732 is 237835124.

It is a junction number, because it is equal to n+sod(n) for n = 421538692 and 421538701.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3099482 + ... + 3099617.

It is an arithmetic number, because the mean of its divisors is an integer number (65090550).

Almost surely, 2^421538732 is an apocalyptic number.

It is an amenable number.

421538732 is a deficient number, since it is larger than the sum of its proper divisors (359547868).

421538732 is a wasteful number, since it uses less digits than its factorization.

421538732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6199120 (or 6199118 counting only the distinct ones).

The product of its digits is 40320, while the sum is 35.

The square root of 421538732 is about 20531.4084270904. The cubic root of 421538732 is about 749.8006771059.

The spelling of 421538732 in words is "four hundred twenty-one million, five hundred thirty-eight thousand, seven hundred thirty-two".