1440142012 has 24 divisors (see below), whose sum is σ = 2808948240. Its totient is φ = 642044160.

The previous prime is 1440142007. The next prime is 1440142021. The reversal of 1440142012 is 2102410441.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 556039 + ... + 558622.

It is an arithmetic number, because the mean of its divisors is an integer number (117039510).

Almost surely, 2^1440142012 is an apocalyptic number.

It is an amenable number.

1440142012 is a deficient number, since it is larger than the sum of its proper divisors (1368806228).

1440142012 is a wasteful number, since it uses less digits than its factorization.

1440142012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114701 (or 1114699 counting only the distinct ones).

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

The square root of 1440142012 is about 37949.2030482855. The cubic root of 1440142012 is about 1129.2803552171.

Adding to 1440142012 its reverse (2102410441), we get a palindrome (3542552453).

The spelling of 1440142012 in words is "one billion, four hundred forty million, one hundred forty-two thousand, twelve".