421201402 has 16 divisors (see below), whose sum is σ = 658524672. Its totient is φ = 201825360.

The previous prime is 421201399. The next prime is 421201421. The reversal of 421201402 is 204102124.

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, 26593 + ... + 39364.

It is an arithmetic number, because the mean of its divisors is an integer number (41157792).

Almost surely, 2^421201402 is an apocalyptic number.

421201402 is a deficient number, since it is larger than the sum of its proper divisors (237323270).

421201402 is a wasteful number, since it uses less digits than its factorization.

421201402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66093.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 421201402 is about 20523.1918082934. The cubic root of 421201402 is about 749.6006181781.

Adding to 421201402 its reverse (204102124), we get a palindrome (625303526).

The spelling of 421201402 in words is "four hundred twenty-one million, two hundred one thousand, four hundred two".