1440134642 has 4 divisors (see below), whose sum is σ = 2160201966. Its totient is φ = 720067320.

The previous prime is 1440134639. The next prime is 1440134699. The reversal of 1440134642 is 2464310441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1141155961 + 298978681 = 33781^2 + 17291^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360033659 + ... + 360033662.

Almost surely, 2^1440134642 is an apocalyptic number.

1440134642 is a deficient number, since it is larger than the sum of its proper divisors (720067324).

1440134642 is an equidigital number, since it uses as much as digits as its factorization.

1440134642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720067323.

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 1440134642 is about 37949.1059446728. The cubic root of 1440134642 is about 1129.2784288306.

The spelling of 1440134642 in words is "one billion, four hundred forty million, one hundred thirty-four thousand, six hundred forty-two".