122788069 has 4 divisors (see below), whose sum is σ = 123612300. Its totient is φ = 121963840.

The previous prime is 122788067. The next prime is 122788097. The reversal of 122788069 is 960887221.

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 8191044 + 114597025 = 2862^2 + 10705^2 .

It is a cyclic number.

It is not a de Polignac number, because 122788069 - 2¹ = 122788067 is a prime.

It is a super-2 number, since 2×122788069² = 30153819777497522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122788067) 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, 411892 + ... + 412189.

It is an arithmetic number, because the mean of its divisors is an integer number (30903075).

Almost surely, 2^122788069 is an apocalyptic number.

It is an amenable number.

122788069 is a deficient number, since it is larger than the sum of its proper divisors (824231).

122788069 is an equidigital number, since it uses as much as digits as its factorization.

122788069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824230.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 122788069 is about 11080.9777998153. The cubic root of 122788069 is about 497.0331895566.

The spelling of 122788069 in words is "one hundred twenty-two million, seven hundred eighty-eight thousand, sixty-nine".