1440142102 has 64 divisors (see below), whose sum is σ = 2633140224. Its totient is φ = 577463040.

The previous prime is 1440142091. The next prime is 1440142139. The reversal of 1440142102 is 2012410441.

It is a self number, because there is not a number n which added to its sum of digits gives 1440142102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4630527 + ... + 4630837.

It is an arithmetic number, because the mean of its divisors is an integer number (41142816).

Almost surely, 2^1440142102 is an apocalyptic number.

1440142102 is a deficient number, since it is larger than the sum of its proper divisors (1192998122).

1440142102 is a wasteful number, since it uses less digits than its factorization.

1440142102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1440142102 is about 37949.2042340811. The cubic root of 1440142102 is about 1129.2803787415.

Adding to 1440142102 its reverse (2012410441), we get a palindrome (3452552543).

The spelling of 1440142102 in words is "one billion, four hundred forty million, one hundred forty-two thousand, one hundred two".