122400727 has 2 divisors, whose sum is σ = 122400728. Its totient is φ = 122400726.

The previous prime is 122400713. The next prime is 122400763. The reversal of 122400727 is 727004221.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122400727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122400827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61200363 + 61200364.

It is an arithmetic number, because the mean of its divisors is an integer number (61200364).

Almost surely, 2^122400727 is an apocalyptic number.

122400727 is a deficient number, since it is larger than the sum of its proper divisors (1).

122400727 is an equidigital number, since it uses as much as digits as its factorization.

122400727 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 122400727 is about 11063.4862046283. The cubic root of 122400727 is about 496.5099991327.

Adding to 122400727 its reverse (727004221), we get a palindrome (849404948).

The spelling of 122400727 in words is "one hundred twenty-two million, four hundred thousand, seven hundred twenty-seven".