420202402 has 16 divisors (see below), whose sum is σ = 652904640. Its totient is φ = 202586832.

The previous prime is 420202337. The next prime is 420202403. The reversal of 420202402 is 204202024.

It is not an unprimeable number, because it can be changed into a prime (420202403) 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, 43333 + ... + 52135.

It is an arithmetic number, because the mean of its divisors is an integer number (40806540).

Almost surely, 2^420202402 is an apocalyptic number.

420202402 is a deficient number, since it is larger than the sum of its proper divisors (232702238).

420202402 is a wasteful number, since it uses less digits than its factorization.

420202402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9657.

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 420202402 is about 20498.8390402969. The cubic root of 420202402 is about 749.0075180335.

Adding to 420202402 its reverse (204202024), we get a palindrome (624404426).

The spelling of 420202402 in words is "four hundred twenty million, two hundred two thousand, four hundred two".