142978691707 has 4 divisors (see below), whose sum is σ = 144452698936. Its totient is φ = 141504684480.

The previous prime is 142978691701. The next prime is 142978691747. The reversal of 142978691707 is 707196879241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 142978691707 - 2³¹ = 140831208059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142978691701) 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, 737003469 + ... + 737003662.

It is an arithmetic number, because the mean of its divisors is an integer number (36113174734).

Almost surely, 2^142978691707 is an apocalyptic number.

142978691707 is a deficient number, since it is larger than the sum of its proper divisors (1474007229).

142978691707 is an equidigital number, since it uses as much as digits as its factorization.

142978691707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1474007228.

The product of its (nonzero) digits is 10668672, while the sum is 61.

The spelling of 142978691707 in words is "one hundred forty-two billion, nine hundred seventy-eight million, six hundred ninety-one thousand, seven hundred seven".