142194379 has 4 divisors (see below), whose sum is σ = 142242184. Its totient is φ = 142146576.

The previous prime is 142194329. The next prime is 142194397. The reversal of 142194379 is 973491241.

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 142194379 - 2⁷ = 142194251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142194319) 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, 19122 + ... + 25495.

It is an arithmetic number, because the mean of its divisors is an integer number (35560546).

Almost surely, 2^142194379 is an apocalyptic number.

142194379 is a deficient number, since it is larger than the sum of its proper divisors (47805).

142194379 is an equidigital number, since it uses as much as digits as its factorization.

142194379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47804.

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

The square root of 142194379 is about 11924.5284602788. The cubic root of 142194379 is about 521.9482866422.

The spelling of 142194379 in words is "one hundred forty-two million, one hundred ninety-four thousand, three hundred seventy-nine".