1242013312 has 32 divisors (see below), whose sum is σ = 2488040100. Its totient is φ = 617564160.

The previous prime is 1242013301. The next prime is 1242013349. The reversal of 1242013312 is 2133102421.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 749883456 + 492129856 = 27384^2 + 22184^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 1242013312.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3637 + ... + 49972.

Almost surely, 2^1242013312 is an apocalyptic number.

It is an amenable number.

1242013312 is an abundant number, since it is smaller than the sum of its proper divisors (1246026788).

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

1242013312 is an equidigital number, since it uses as much as digits as its factorization.

1242013312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53804 (or 53792 counting only the distinct ones).

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

The square root of 1242013312 is about 35242.2092383551. The cubic root of 1242013312 is about 1074.9182016722.

Adding to 1242013312 its reverse (2133102421), we get a palindrome (3375115733).

The spelling of 1242013312 in words is "one billion, two hundred forty-two million, thirteen thousand, three hundred twelve".