1239315122 has 4 divisors (see below), whose sum is σ = 1858972686. Its totient is φ = 619657560.

The previous prime is 1239315097. The next prime is 1239315127. The reversal of 1239315122 is 2215139321.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 891082201 + 348232921 = 29851^2 + 18661^2 .

It is not an unprimeable number, because it can be changed into a prime (1239315127) 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 as a sum of consecutive naturals, namely, 309828779 + ... + 309828782.

Almost surely, 2^1239315122 is an apocalyptic number.

1239315122 is a deficient number, since it is larger than the sum of its proper divisors (619657564).

1239315122 is an equidigital number, since it uses as much as digits as its factorization.

1239315122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619657563.

The product of its digits is 3240, while the sum is 29.

The square root of 1239315122 is about 35203.9077660421. The cubic root of 1239315122 is about 1074.1392415991.

The spelling of 1239315122 in words is "one billion, two hundred thirty-nine million, three hundred fifteen thousand, one hundred twenty-two".