122724787 has 2 divisors, whose sum is σ = 122724788. Its totient is φ = 122724786.

The previous prime is 122724773. The next prime is 122724817. The reversal of 122724787 is 787427221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122724787 - 2¹⁵ = 122692019 is a prime.

It is a super-2 number, since 2×122724787² = 30122746688390738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (122724587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61362393 + 61362394.

It is an arithmetic number, because the mean of its divisors is an integer number (61362394).

Almost surely, 2^122724787 is an apocalyptic number.

122724787 is a deficient number, since it is larger than the sum of its proper divisors (1).

122724787 is an equidigital number, since it uses as much as digits as its factorization.

122724787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87808, while the sum is 40.

The square root of 122724787 is about 11078.1219978839. The cubic root of 122724787 is about 496.9477885902.

The spelling of 122724787 in words is "one hundred twenty-two million, seven hundred twenty-four thousand, seven hundred eighty-seven".