420604403 has 4 divisors (see below), whose sum is σ = 420841560. Its totient is φ = 420367248.

The previous prime is 420604399. The next prime is 420604411. The reversal of 420604403 is 304406024.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 420604403 - 2² = 420604399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420604423) 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, 115898 + ... + 119471.

It is an arithmetic number, because the mean of its divisors is an integer number (105210390).

Almost surely, 2^420604403 is an apocalyptic number.

420604403 is a deficient number, since it is larger than the sum of its proper divisors (237157).

420604403 is a wasteful number, since it uses less digits than its factorization.

420604403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237156.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 420604403 is about 20508.6421539799. The cubic root of 420604403 is about 749.2462964580.

The spelling of 420604403 in words is "four hundred twenty million, six hundred four thousand, four hundred three".