142206917 has 2 divisors, whose sum is σ = 142206918. Its totient is φ = 142206916.

The previous prime is 142206893. The next prime is 142206929. The reversal of 142206917 is 719602241.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127260961 + 14945956 = 11281^2 + 3866^2 .

It is a cyclic number.

It is not a de Polignac number, because 142206917 - 2⁸ = 142206661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142206937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71103458 + 71103459.

It is an arithmetic number, because the mean of its divisors is an integer number (71103459).

Almost surely, 2^142206917 is an apocalyptic number.

It is an amenable number.

142206917 is a deficient number, since it is larger than the sum of its proper divisors (1).

142206917 is an equidigital number, since it uses as much as digits as its factorization.

142206917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 142206917 is about 11925.0541717847. The cubic root of 142206917 is about 521.9636271344.

The spelling of 142206917 in words is "one hundred forty-two million, two hundred six thousand, nine hundred seventeen".