142567979 has 2 divisors, whose sum is σ = 142567980. Its totient is φ = 142567978.

The previous prime is 142567969. The next prime is 142568017. The reversal of 142567979 is 979765241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142567979 - 2⁸ = 142567723 is a prime.

It is a super-2 number, since 2×142567979² = 40651257272288882, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (142567969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71283989 + 71283990.

It is an arithmetic number, because the mean of its divisors is an integer number (71283990).

Almost surely, 2^142567979 is an apocalyptic number.

142567979 is a deficient number, since it is larger than the sum of its proper divisors (1).

142567979 is an equidigital number, since it uses as much as digits as its factorization.

142567979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 952560, while the sum is 50.

The square root of 142567979 is about 11940.1833738013. The cubic root of 142567979 is about 522.4050073412.

The spelling of 142567979 in words is "one hundred forty-two million, five hundred sixty-seven thousand, nine hundred seventy-nine".