142909757 has 2 divisors, whose sum is σ = 142909758. Its totient is φ = 142909756.

The previous prime is 142909717. The next prime is 142909759. The reversal of 142909757 is 757909241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89605156 + 53304601 = 9466^2 + 7301^2 .

It is a cyclic number.

It is not a de Polignac number, because 142909757 - 2¹⁸ = 142647613 is a prime.

Together with 142909759, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142909759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71454878 + 71454879.

It is an arithmetic number, because the mean of its divisors is an integer number (71454879).

Almost surely, 2^142909757 is an apocalyptic number.

It is an amenable number.

142909757 is a deficient number, since it is larger than the sum of its proper divisors (1).

142909757 is an equidigital number, since it uses as much as digits as its factorization.

142909757 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 158760, while the sum is 44.

The square root of 142909757 is about 11954.4868982320. The cubic root of 142909757 is about 522.8221277753.

The spelling of 142909757 in words is "one hundred forty-two million, nine hundred nine thousand, seven hundred fifty-seven".