142531379 has 2 divisors, whose sum is σ = 142531380. Its totient is φ = 142531378.

The previous prime is 142531373. The next prime is 142531381. The reversal of 142531379 is 973135241.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142531379 is a prime.

Together with 142531381, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (142531373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71265689 + 71265690.

It is an arithmetic number, because the mean of its divisors is an integer number (71265690).

Almost surely, 2^142531379 is an apocalyptic number.

142531379 is a deficient number, since it is larger than the sum of its proper divisors (1).

142531379 is an equidigital number, since it uses as much as digits as its factorization.

142531379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 35.

The square root of 142531379 is about 11938.6506356456. The cubic root of 142531379 is about 522.3602996404.

The spelling of 142531379 in words is "one hundred forty-two million, five hundred thirty-one thousand, three hundred seventy-nine".