122307709 has 4 divisors (see below), whose sum is σ = 123200604. Its totient is φ = 121414816.

The previous prime is 122307643. The next prime is 122307727. The reversal of 122307709 is 907703221.

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

It can be written as a sum of positive squares in 2 ways, for example, as 66879684 + 55428025 = 8178^2 + 7445^2 .

It is a cyclic number.

It is not a de Polignac number, because 122307709 - 2¹³ = 122299517 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122307739) 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, 446242 + ... + 446515.

It is an arithmetic number, because the mean of its divisors is an integer number (30800151).

Almost surely, 2^122307709 is an apocalyptic number.

It is an amenable number.

122307709 is a deficient number, since it is larger than the sum of its proper divisors (892895).

122307709 is an equidigital number, since it uses as much as digits as its factorization.

122307709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892894.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 122307709 is about 11059.2815770284. The cubic root of 122307709 is about 496.3841935856.

The spelling of 122307709 in words is "one hundred twenty-two million, three hundred seven thousand, seven hundred nine".