420101402 has 12 divisors (see below), whose sum is σ = 733034250. Its totient is φ = 180043416.

The previous prime is 420101389. The next prime is 420101459. The reversal of 420101402 is 204101024.

It can be written as a sum of positive squares in only one way, i.e., 218773681 + 201327721 = 14791^2 + 14189^2 .

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 2143277 + ... + 2143472.

Almost surely, 2^420101402 is an apocalyptic number.

420101402 is a deficient number, since it is larger than the sum of its proper divisors (312932848).

420101402 is a wasteful number, since it uses less digits than its factorization.

420101402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4286765 (or 4286758 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 420101402 is about 20496.3753380933. The cubic root of 420101402 is about 748.9475026530.

Adding to 420101402 its reverse (204101024), we get a palindrome (624202426).

The spelling of 420101402 in words is "four hundred twenty million, one hundred one thousand, four hundred two".