1240015412 has 12 divisors (see below), whose sum is σ = 2172675876. Its totient is φ = 619250880.

The previous prime is 1240015409. The next prime is 1240015433. The reversal of 1240015412 is 2145100421.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 95140516 + 1144874896 = 9754^2 + 33836^2 .

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 3 ways as a sum of consecutive naturals, for example, 185513 + ... + 192080.

It is an arithmetic number, because the mean of its divisors is an integer number (181056323).

Almost surely, 2^1240015412 is an apocalyptic number.

It is an amenable number.

1240015412 is a deficient number, since it is larger than the sum of its proper divisors (932660464).

1240015412 is a wasteful number, since it uses less digits than its factorization.

1240015412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378418 (or 378416 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 1240015412 is about 35213.8525583328. The cubic root of 1240015412 is about 1074.3415219606.

Adding to 1240015412 its reverse (2145100421), we get a palindrome (3385115833).

The spelling of 1240015412 in words is "one billion, two hundred forty million, fifteen thousand, four hundred twelve".