1319142399 has 8 divisors (see below), whose sum is σ = 1759050240. Its totient is φ = 879331416.

The previous prime is 1319142397. The next prime is 1319142403. The reversal of 1319142399 is 9932419131.

It is a Cunningham number, because it is equal to 36320²-1.

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

It is not a de Polignac number, because 1319142399 - 2¹ = 1319142397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1319142399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1319142397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18162 + ... + 54480.

It is an arithmetic number, because the mean of its divisors is an integer number (219881280).

Almost surely, 2^1319142399 is an apocalyptic number.

1319142399 is a deficient number, since it is larger than the sum of its proper divisors (439907841).

1319142399 is a wasteful number, since it uses less digits than its factorization.

1319142399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48429.

The product of its digits is 52488, while the sum is 42.

The square root of 1319142399 is about 36319.9999862335. Note that the first 4 decimals coincide. The cubic root of 1319142399 is about 1096.7236945961.

The spelling of 1319142399 in words is "one billion, three hundred nineteen million, one hundred forty-two thousand, three hundred ninety-nine".