420122403 has 8 divisors (see below), whose sum is σ = 622403600. Its totient is φ = 280081584.

The previous prime is 420122399. The next prime is 420122429. The reversal of 420122403 is 304221024.

420122403 is a `hidden beast` number, since 420 + 1 + 2 + 240 + 3 = 666.

It is not a de Polignac number, because 420122403 - 2² = 420122399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420122473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7780018 + ... + 7780071.

It is an arithmetic number, because the mean of its divisors is an integer number (77800450).

Almost surely, 2^420122403 is an apocalyptic number.

420122403 is a deficient number, since it is larger than the sum of its proper divisors (202281197).

420122403 is a wasteful number, since it uses less digits than its factorization.

420122403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15560098 (or 15560092 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 420122403 is about 20496.8876417860. The cubic root of 420122403 is about 748.9599824847.

Adding to 420122403 its reverse (304221024), we get a palindrome (724343427).

The spelling of 420122403 in words is "four hundred twenty million, one hundred twenty-two thousand, four hundred three".