122642071 has 2 divisors, whose sum is σ = 122642072. Its totient is φ = 122642070.

The previous prime is 122642057. The next prime is 122642077. The reversal of 122642071 is 170246221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122642071 - 2⁹ = 122641559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122642077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61321035 + 61321036.

It is an arithmetic number, because the mean of its divisors is an integer number (61321036).

Almost surely, 2^122642071 is an apocalyptic number.

122642071 is a deficient number, since it is larger than the sum of its proper divisors (1).

122642071 is an equidigital number, since it uses as much as digits as its factorization.

122642071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 122642071 is about 11074.3880643582. The cubic root of 122642071 is about 496.8361165780.

Adding to 122642071 its reverse (170246221), we get a palindrome (292888292).

The spelling of 122642071 in words is "one hundred twenty-two million, six hundred forty-two thousand, seventy-one".