142122529 has 2 divisors, whose sum is σ = 142122530. Its totient is φ = 142122528.

The previous prime is 142122517. The next prime is 142122551. The reversal of 142122529 is 925221241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92448225 + 49674304 = 9615^2 + 7048^2 .

It is a cyclic number.

It is not a de Polignac number, because 142122529 - 2¹⁷ = 141991457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142122497 and 142122506.

It is not a weakly prime, because it can be changed into another prime (142123529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71061264 + 71061265.

It is an arithmetic number, because the mean of its divisors is an integer number (71061265).

Almost surely, 2^142122529 is an apocalyptic number.

It is an amenable number.

142122529 is a deficient number, since it is larger than the sum of its proper divisors (1).

142122529 is an equidigital number, since it uses as much as digits as its factorization.

142122529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 28.

The square root of 142122529 is about 11921.5153818632. The cubic root of 142122529 is about 521.8603593440.

The spelling of 142122529 in words is "one hundred forty-two million, one hundred twenty-two thousand, five hundred twenty-nine".