1421198897902 has 16 divisors (see below), whose sum is σ = 2436372796032. Its totient is φ = 609077284920.

The previous prime is 1421198897831. The next prime is 1421198897903. The reversal of 1421198897902 is 2097988911241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421198897903) 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, 519577 + ... + 1764187.

It is an arithmetic number, because the mean of its divisors is an integer number (152273299752).

Almost surely, 2^{1421198897902} is an apocalyptic number.

1421198897902 is a deficient number, since it is larger than the sum of its proper divisors (1015173898130).

1421198897902 is a wasteful number, since it uses less digits than its factorization.

1421198897902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1326183.

The product of its (nonzero) digits is 5225472, while the sum is 61.

The spelling of 1421198897902 in words is "one trillion, four hundred twenty-one billion, one hundred ninety-eight million, eight hundred ninety-seven thousand, nine hundred two".