142896139 has 2 divisors, whose sum is σ = 142896140. Its totient is φ = 142896138.

The previous prime is 142896133. The next prime is 142896167. The reversal of 142896139 is 931698241.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142896139 - 2¹¹ = 142894091 is a prime.

It is a super-2 number, since 2×142896139² = 40838613082214642, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 142896095 and 142896104.

It is not a weakly prime, because it can be changed into another prime (142896133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71448069 + 71448070.

It is an arithmetic number, because the mean of its divisors is an integer number (71448070).

Almost surely, 2^142896139 is an apocalyptic number.

142896139 is a deficient number, since it is larger than the sum of its proper divisors (1).

142896139 is an equidigital number, since it uses as much as digits as its factorization.

142896139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 43.

The square root of 142896139 is about 11953.9173077280. The cubic root of 142896139 is about 522.8055205167.

The spelling of 142896139 in words is "one hundred forty-two million, eight hundred ninety-six thousand, one hundred thirty-nine".