142521059 has 2 divisors, whose sum is σ = 142521060. Its totient is φ = 142521058.

The previous prime is 142521019. The next prime is 142521083. The reversal of 142521059 is 950125241.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142521059 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is equal to p_8046515 and since 142521059 and 8046515 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (142521019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71260529 + 71260530.

It is an arithmetic number, because the mean of its divisors is an integer number (71260530).

Almost surely, 2^142521059 is an apocalyptic number.

142521059 is a deficient number, since it is larger than the sum of its proper divisors (1).

142521059 is an equidigital number, since it uses as much as digits as its factorization.

142521059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 142521059 is about 11938.2184181728. The cubic root of 142521059 is about 522.3476921513.

The spelling of 142521059 in words is "one hundred forty-two million, five hundred twenty-one thousand, fifty-nine".