122392513 has 4 divisors (see below), whose sum is σ = 122739588. Its totient is φ = 122045440.

The previous prime is 122392493. The next prime is 122392519. The reversal of 122392513 is 315293221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 315293221 = 619 ⋅509359.

It can be written as a sum of positive squares in 2 ways, for example, as 36144144 + 86248369 = 6012^2 + 9287^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122392513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122392519) 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, 173008 + ... + 173713.

It is an arithmetic number, because the mean of its divisors is an integer number (30684897).

Almost surely, 2^122392513 is an apocalyptic number.

It is an amenable number.

122392513 is a deficient number, since it is larger than the sum of its proper divisors (347075).

122392513 is an equidigital number, since it uses as much as digits as its factorization.

122392513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347074.

The product of its digits is 3240, while the sum is 28.

The square root of 122392513 is about 11063.1149772566. The cubic root of 122392513 is about 496.4988923785.

The spelling of 122392513 in words is "one hundred twenty-two million, three hundred ninety-two thousand, five hundred thirteen".