420404732 has 12 divisors (see below), whose sum is σ = 802590936. Its totient is φ = 191093040.

The previous prime is 420404731. The next prime is 420404749. The reversal of 420404732 is 237404024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420404731) 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, 4777283 + ... + 4777370.

It is an arithmetic number, because the mean of its divisors is an integer number (66882578).

Almost surely, 2^420404732 is an apocalyptic number.

It is an amenable number.

420404732 is a deficient number, since it is larger than the sum of its proper divisors (382186204).

420404732 is a wasteful number, since it uses less digits than its factorization.

420404732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9554668 (or 9554666 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 26.

The square root of 420404732 is about 20503.7736039003. The cubic root of 420404732 is about 749.1277159615.

Adding to 420404732 its reverse (237404024), we get a palindrome (657808756).

The spelling of 420404732 in words is "four hundred twenty million, four hundred four thousand, seven hundred thirty-two".