1320444242 has 8 divisors (see below), whose sum is σ = 2133025356. Its totient is φ = 609435792.

The previous prime is 1320444239. The next prime is 1320444277. The reversal of 1320444242 is 2424440231.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1319941561 + 502681 = 36331^2 + 709^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 50786317 = 1320444242 / (1 + 3 + 2 + 0 + 4 + 4 + 4 + 2 + 4 + 2).

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, 25393133 + ... + 25393184.

Almost surely, 2^1320444242 is an apocalyptic number.

1320444242 is a deficient number, since it is larger than the sum of its proper divisors (812581114).

1320444242 is a wasteful number, since it uses less digits than its factorization.

1320444242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50786332.

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 1320444242 is about 36337.9174141832. The cubic root of 1320444242 is about 1097.0843563523.

Adding to 1320444242 its reverse (2424440231), we get a palindrome (3744884473).

The spelling of 1320444242 in words is "one billion, three hundred twenty million, four hundred forty-four thousand, two hundred forty-two".