420540332 has 12 divisors (see below), whose sum is σ = 739645200. Its totient is φ = 209213136.

The previous prime is 420540277. The next prime is 420540347. The reversal of 420540332 is 233045024.

It is a junction number, because it is equal to n+sod(n) for n = 420540298 and 420540307.

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, 263363 + ... + 264954.

It is an arithmetic number, because the mean of its divisors is an integer number (61637100).

Almost surely, 2^420540332 is an apocalyptic number.

It is an amenable number.

420540332 is a deficient number, since it is larger than the sum of its proper divisors (319104868).

420540332 is a wasteful number, since it uses less digits than its factorization.

420540332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528520 (or 528518 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 420540332 is about 20507.0800456818. The cubic root of 420540332 is about 749.2082500999.

Adding to 420540332 its reverse (233045024), we get a palindrome (653585356).

The spelling of 420540332 in words is "four hundred twenty million, five hundred forty thousand, three hundred thirty-two".