122787243 has 12 divisors (see below), whose sum is σ = 187792488. Its totient is φ = 77042880.

The previous prime is 122787239. The next prime is 122787289. The reversal of 122787243 is 342787221.

It is not a de Polignac number, because 122787243 - 2² = 122787239 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122787198 and 122787207.

It is not an unprimeable number, because it can be changed into a prime (122787233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 401113 + ... + 401418.

It is an arithmetic number, because the mean of its divisors is an integer number (15649374).

Almost surely, 2^122787243 is an apocalyptic number.

122787243 is a deficient number, since it is larger than the sum of its proper divisors (65005245).

122787243 is a wasteful number, since it uses less digits than its factorization.

122787243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802554 (or 802551 counting only the distinct ones).

The product of its digits is 37632, while the sum is 36.

The square root of 122787243 is about 11080.9405286735. The cubic root of 122787243 is about 497.0320750337.

The spelling of 122787243 in words is "one hundred twenty-two million, seven hundred eighty-seven thousand, two hundred forty-three".