420433403 has 8 divisors (see below), whose sum is σ = 463304688. Its totient is φ = 379066464.

The previous prime is 420433381. The next prime is 420433451. The reversal of 420433403 is 304334024.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 420433403 - 2¹⁶ = 420367867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420433483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 375500 + ... + 376617.

It is an arithmetic number, because the mean of its divisors is an integer number (57913086).

Almost surely, 2^420433403 is an apocalyptic number.

420433403 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

420433403 is a deficient number, since it is larger than the sum of its proper divisors (42871285).

420433403 is a wasteful number, since it uses less digits than its factorization.

420433403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752173.

The product of its (nonzero) digits is 3456, while the sum is 23.

The square root of 420433403 is about 20504.4727559623. The cubic root of 420433403 is about 749.1447453864.

Adding to 420433403 its reverse (304334024), we get a palindrome (724767427).

The spelling of 420433403 in words is "four hundred twenty million, four hundred thirty-three thousand, four hundred three".