420115402 has 16 divisors (see below), whose sum is σ = 745032960. Its totient is φ = 173840688.

The previous prime is 420115369. The next prime is 420115417. The reversal of 420115402 is 204511024.

It is a self number, because there is not a number n which added to its sum of digits gives 420115402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 516978 + ... + 517789.

It is an arithmetic number, because the mean of its divisors is an integer number (46564560).

Almost surely, 2^420115402 is an apocalyptic number.

420115402 is a deficient number, since it is larger than the sum of its proper divisors (324917558).

420115402 is a wasteful number, since it uses less digits than its factorization.

420115402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034805.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 420115402 is about 20496.7168590484. The cubic root of 420115402 is about 748.9558221908.

Adding to 420115402 its reverse (204511024), we get a palindrome (624626426).

The spelling of 420115402 in words is "four hundred twenty million, one hundred fifteen thousand, four hundred two".