1402220561 has 16 divisors (see below), whose sum is σ = 1649377536. Its totient is φ = 1166913216.

The previous prime is 1402220549. The next prime is 1402220563. The reversal of 1402220561 is 1650222041.

It is a happy number.

It is not a de Polignac number, because 1402220561 - 2²² = 1398026257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1402220563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120575 + ... + 131691.

It is an arithmetic number, because the mean of its divisors is an integer number (103086096).

Almost surely, 2^1402220561 is an apocalyptic number.

It is an amenable number.

1402220561 is a deficient number, since it is larger than the sum of its proper divisors (247156975).

1402220561 is a wasteful number, since it uses less digits than its factorization.

1402220561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11648.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1402220561 is about 37446.2356051980. The cubic root of 1402220561 is about 1119.2800860878.

The spelling of 1402220561 in words is "one billion, four hundred two million, two hundred twenty thousand, five hundred sixty-one".