1311224042 has 8 divisors (see below), whose sum is σ = 2082532356. Its totient is φ = 617046592.

The previous prime is 1311224041. The next prime is 1311224099. The reversal of 1311224042 is 2404221131.

It can be written as a sum of positive squares in 2 ways, for example, as 1304726641 + 6497401 = 36121^2 + 2549^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1311224041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19282673 + ... + 19282740.

Almost surely, 2^1311224042 is an apocalyptic number.

1311224042 is a deficient number, since it is larger than the sum of its proper divisors (771308314).

1311224042 is a wasteful number, since it uses less digits than its factorization.

1311224042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38565432.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1311224042 is about 36210.8276900708. The cubic root of 1311224042 is about 1094.5248710485.

Adding to 1311224042 its reverse (2404221131), we get a palindrome (3715445173).

The spelling of 1311224042 in words is "one billion, three hundred eleven million, two hundred twenty-four thousand, forty-two".