1402243290 has 72 divisors (see below), whose sum is σ = 4241083860. Its totient is φ = 320511744.

The previous prime is 1402243223. The next prime is 1402243319. The reversal of 1402243290 is 923422041.

1402243290 is a `hidden beast` number, since 140 + 2 + 2 + 432 + 90 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1158789681 + 243453609 = 34041^2 + 15603^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 154575 + ... + 163394.

Almost surely, 2^1402243290 is an apocalyptic number.

1402243290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1402243290 is an abundant number, since it is smaller than the sum of its proper divisors (2838840570).

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

1402243290 is a wasteful number, since it uses less digits than its factorization.

1402243290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317996 (or 317986 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 1402243290 is about 37446.5390924181. The cubic root of 1402243290 is about 1119.2861336337.

The spelling of 1402243290 in words is "one billion, four hundred two million, two hundred forty-three thousand, two hundred ninety".