1242031312 has 40 divisors (see below), whose sum is σ = 2448861120. Its totient is φ = 610156800.

The previous prime is 1242031291. The next prime is 1242031331. The reversal of 1242031312 is 2131302421.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1242031312.

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 7 ways as a sum of consecutive naturals, for example, 229437 + ... + 234787.

It is an arithmetic number, because the mean of its divisors is an integer number (61221528).

Almost surely, 2^1242031312 is an apocalyptic number.

It is an amenable number.

1242031312 is a deficient number, since it is larger than the sum of its proper divisors (1206829808).

1242031312 is a wasteful number, since it uses less digits than its factorization.

1242031312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5611 (or 5605 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1242031312 is about 35242.4646130205. The cubic root of 1242031312 is about 1074.9233944330.

Adding to 1242031312 its reverse (2131302421), we get a palindrome (3373333733).

The spelling of 1242031312 in words is "one billion, two hundred forty-two million, thirty-one thousand, three hundred twelve".