142718739 has 4 divisors (see below), whose sum is σ = 190291656. Its totient is φ = 95145824.

The previous prime is 142718717. The next prime is 142718753. The reversal of 142718739 is 937817241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 937817241 = 3 ⋅312605747.

It is a cyclic number.

It is not a de Polignac number, because 142718739 - 2¹⁵ = 142685971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142718739.

It is not an unprimeable number, because it can be changed into a prime (142718239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23786454 + ... + 23786459.

It is an arithmetic number, because the mean of its divisors is an integer number (47572914).

Almost surely, 2^142718739 is an apocalyptic number.

142718739 is a deficient number, since it is larger than the sum of its proper divisors (47572917).

142718739 is an equidigital number, since it uses as much as digits as its factorization.

142718739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47572916.

The product of its digits is 84672, while the sum is 42.

The square root of 142718739 is about 11946.4948415843. The cubic root of 142718739 is about 522.5890833511.

The spelling of 142718739 in words is "one hundred forty-two million, seven hundred eighteen thousand, seven hundred thirty-nine".