1421599656 has 16 divisors (see below), whose sum is σ = 3553999200. Its totient is φ = 473866544.

The previous prime is 1421599649. The next prime is 1421599661. The reversal of 1421599656 is 6569951241.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29616636 + ... + 29616683.

It is an arithmetic number, because the mean of its divisors is an integer number (222124950).

Almost surely, 2^1421599656 is an apocalyptic number.

It is an amenable number.

1421599656 is an abundant number, since it is smaller than the sum of its proper divisors (2132399544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1421599656 is a wasteful number, since it uses less digits than its factorization.

1421599656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59233328 (or 59233324 counting only the distinct ones).

The product of its digits is 583200, while the sum is 48.

The square root of 1421599656 is about 37704.1066198365. The cubic root of 1421599656 is about 1124.4127716549.

The spelling of 1421599656 in words is "one billion, four hundred twenty-one million, five hundred ninety-nine thousand, six hundred fifty-six".