1240144002 has 72 divisors (see below), whose sum is σ = 2777122764. Its totient is φ = 399866112.

The previous prime is 1240143973. The next prime is 1240144109. The reversal of 1240144002 is 2004410421.

It can be written as a sum of positive squares in 2 ways, for example, as 1232641881 + 7502121 = 35109^2 + 2739^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9052078 + ... + 9052214.

Almost surely, 2^1240144002 is an apocalyptic number.

1240144002 is an abundant number, since it is smaller than the sum of its proper divisors (1536978762).

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

1240144002 is a wasteful number, since it uses less digits than its factorization.

1240144002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384 (or 298 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 1240144002 is about 35215.6783549600. The cubic root of 1240144002 is about 1074.3786571983.

Adding to 1240144002 its reverse (2004410421), we get a palindrome (3244554423).

The spelling of 1240144002 in words is "one billion, two hundred forty million, one hundred forty-four thousand, two".