420133403 has 4 divisors (see below), whose sum is σ = 420888240. Its totient is φ = 419378568.

The previous prime is 420133397. The next prime is 420133451. The reversal of 420133403 is 304331024.

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 420133403 - 2¹⁰ = 420132379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420133303) 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, 376583 + ... + 377696.

It is an arithmetic number, because the mean of its divisors is an integer number (105222060).

Almost surely, 2^420133403 is an apocalyptic number.

420133403 is a deficient number, since it is larger than the sum of its proper divisors (754837).

420133403 is an equidigital number, since it uses as much as digits as its factorization.

420133403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754836.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 420133403 is about 20497.1559734515. The cubic root of 420133403 is about 748.9665190622.

Adding to 420133403 its reverse (304331024), we get a palindrome (724464427).

The spelling of 420133403 in words is "four hundred twenty million, one hundred thirty-three thousand, four hundred three".