142779059 has 2 divisors, whose sum is σ = 142779060. Its totient is φ = 142779058.

The previous prime is 142779047. The next prime is 142779089. The reversal of 142779059 is 950977241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142779059 - 2¹² = 142774963 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (142779029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71389529 + 71389530.

It is an arithmetic number, because the mean of its divisors is an integer number (71389530).

Almost surely, 2^142779059 is an apocalyptic number.

142779059 is a deficient number, since it is larger than the sum of its proper divisors (1).

142779059 is an equidigital number, since it uses as much as digits as its factorization.

142779059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 158760, while the sum is 44.

The square root of 142779059 is about 11949.0191647683. The cubic root of 142779059 is about 522.6626969816.

The spelling of 142779059 in words is "one hundred forty-two million, seven hundred seventy-nine thousand, fifty-nine".