1440245042 has 4 divisors (see below), whose sum is σ = 2160367566. Its totient is φ = 720122520.

The previous prime is 1440245029. The next prime is 1440245057. The reversal of 1440245042 is 2405420441.

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., 855621001 + 584624041 = 29251^2 + 24179^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360061259 + ... + 360061262.

Almost surely, 2^1440245042 is an apocalyptic number.

1440245042 is a deficient number, since it is larger than the sum of its proper divisors (720122524).

1440245042 is an equidigital number, since it uses as much as digits as its factorization.

1440245042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720122523.

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 1440245042 is about 37950.5604965197. The cubic root of 1440245042 is about 1129.3072847328.

Adding to 1440245042 its reverse (2405420441), we get a palindrome (3845665483).

The spelling of 1440245042 in words is "one billion, four hundred forty million, two hundred forty-five thousand, forty-two".