142430657 has 2 divisors, whose sum is σ = 142430658. Its totient is φ = 142430656.

The previous prime is 142430623. The next prime is 142430671. The reversal of 142430657 is 756034241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95863681 + 46566976 = 9791^2 + 6824^2 .

It is a cyclic number.

It is not a de Polignac number, because 142430657 - 2¹⁰ = 142429633 is a prime.

It is not a weakly prime, because it can be changed into another prime (142430857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71215328 + 71215329.

It is an arithmetic number, because the mean of its divisors is an integer number (71215329).

Almost surely, 2^142430657 is an apocalyptic number.

It is an amenable number.

142430657 is a deficient number, since it is larger than the sum of its proper divisors (1).

142430657 is an equidigital number, since it uses as much as digits as its factorization.

142430657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 142430657 is about 11934.4315742309. The cubic root of 142430657 is about 522.2372259878.

Adding to 142430657 its reverse (756034241), we get a palindrome (898464898).

The spelling of 142430657 in words is "one hundred forty-two million, four hundred thirty thousand, six hundred fifty-seven".