142655917 has 2 divisors, whose sum is σ = 142655918. Its totient is φ = 142655916.

The previous prime is 142655911. The next prime is 142655939. The reversal of 142655917 is 719556241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80892036 + 61763881 = 8994^2 + 7859^2 .

It is a cyclic number.

It is not a de Polignac number, because 142655917 - 2¹¹ = 142653869 is a prime.

It is a super-2 number, since 2×142655917² = 40701421310221778, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 142655917.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142655911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71327958 + 71327959.

It is an arithmetic number, because the mean of its divisors is an integer number (71327959).

Almost surely, 2^142655917 is an apocalyptic number.

It is an amenable number.

142655917 is a deficient number, since it is larger than the sum of its proper divisors (1).

142655917 is an equidigital number, since it uses as much as digits as its factorization.

142655917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 40.

The square root of 142655917 is about 11943.8652453885. The cubic root of 142655917 is about 522.5123942635.

The spelling of 142655917 in words is "one hundred forty-two million, six hundred fifty-five thousand, nine hundred seventeen".