1402443144 has 24 divisors (see below), whose sum is σ = 3798283710. Its totient is φ = 467481024.

The previous prime is 1402443139. The next prime is 1402443167. The reversal of 1402443144 is 4413442041.

It can be written as a sum of positive squares in only one way, i.e., 1028484900 + 373958244 = 32070^2 + 19338^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9739117 + ... + 9739260.

Almost surely, 2^1402443144 is an apocalyptic number.

It is an amenable number.

1402443144 is an abundant number, since it is smaller than the sum of its proper divisors (2395840566).

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

1402443144 is a wasteful number, since it uses less digits than its factorization.

1402443144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19478389 (or 19478382 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 1402443144 is about 37449.2075216552. The cubic root of 1402443144 is about 1119.3393063335.

Adding to 1402443144 its reverse (4413442041), we get a palindrome (5815885185).

The spelling of 1402443144 in words is "one billion, four hundred two million, four hundred forty-three thousand, one hundred forty-four".