122443687 has 2 divisors, whose sum is σ = 122443688. Its totient is φ = 122443686.

The previous prime is 122443669. The next prime is 122443709. The reversal of 122443687 is 786344221.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122443687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122443627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61221843 + 61221844.

It is an arithmetic number, because the mean of its divisors is an integer number (61221844).

Almost surely, 2^122443687 is an apocalyptic number.

122443687 is a deficient number, since it is larger than the sum of its proper divisors (1).

122443687 is an equidigital number, since it uses as much as digits as its factorization.

122443687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 37.

The square root of 122443687 is about 11065.4275561318. The cubic root of 122443687 is about 496.5680804178.

It can be divided in two parts, 12244 and 3687, that added together give a triangular number (15931 = T₁₇₈).

The spelling of 122443687 in words is "one hundred twenty-two million, four hundred forty-three thousand, six hundred eighty-seven".