142417979 has 8 divisors (see below), whose sum is σ = 156904560. Its totient is φ = 128188000.

The previous prime is 142417973. The next prime is 142418009. The reversal of 142417979 is 979714241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142417979 - 2¹⁶ = 142352443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142417973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62984 + ... + 65205.

It is an arithmetic number, because the mean of its divisors is an integer number (19613070).

Almost surely, 2^142417979 is an apocalyptic number.

142417979 is a deficient number, since it is larger than the sum of its proper divisors (14486581).

142417979 is a wasteful number, since it uses less digits than its factorization.

142417979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128301.

The product of its digits is 127008, while the sum is 44.

The square root of 142417979 is about 11933.9004101760. The cubic root of 142417979 is about 522.2217304474.

The spelling of 142417979 in words is "one hundred forty-two million, four hundred seventeen thousand, nine hundred seventy-nine".