142979341 has 4 divisors (see below), whose sum is σ = 146466684. Its totient is φ = 139492000.

The previous prime is 142979323. The next prime is 142979371. The reversal of 142979341 is 143979241.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5503716 + 137475625 = 2346^2 + 11725^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142979341 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142979294 and 142979303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142979371) 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 in 3 ways as a sum of consecutive naturals, for example, 1743610 + ... + 1743691.

It is an arithmetic number, because the mean of its divisors is an integer number (36616671).

Almost surely, 2^142979341 is an apocalyptic number.

It is an amenable number.

142979341 is a deficient number, since it is larger than the sum of its proper divisors (3487343).

142979341 is an equidigital number, since it uses as much as digits as its factorization.

142979341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3487342.

The product of its digits is 54432, while the sum is 40.

The square root of 142979341 is about 11957.3969157171. The cubic root of 142979341 is about 522.9069695494.

The spelling of 142979341 in words is "one hundred forty-two million, nine hundred seventy-nine thousand, three hundred forty-one".