1322002139 has 4 divisors (see below), whose sum is σ = 1323370224. Its totient is φ = 1320634056.

The previous prime is 1322002133. The next prime is 1322002153. The reversal of 1322002139 is 9312002231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1322002139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1322002133) 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 3 ways as a sum of consecutive naturals, for example, 682592 + ... + 684525.

It is an arithmetic number, because the mean of its divisors is an integer number (330842556).

Almost surely, 2^1322002139 is an apocalyptic number.

1322002139 is a deficient number, since it is larger than the sum of its proper divisors (1368085).

1322002139 is an equidigital number, since it uses as much as digits as its factorization.

1322002139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1368084.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 1322002139 is about 36359.3473401270. The cubic root of 1322002139 is about 1097.5156437044.

The spelling of 1322002139 in words is "one billion, three hundred twenty-two million, two thousand, one hundred thirty-nine".