142044739 has 4 divisors (see below), whose sum is σ = 145883824. Its totient is φ = 138205656.

The previous prime is 142044737. The next prime is 142044761. The reversal of 142044739 is 937440241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 937440241 = 647 ⋅1448903.

It is not a de Polignac number, because 142044739 - 2¹ = 142044737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142044737) 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, 1919487 + ... + 1919560.

It is an arithmetic number, because the mean of its divisors is an integer number (36470956).

Almost surely, 2^142044739 is an apocalyptic number.

142044739 is a deficient number, since it is larger than the sum of its proper divisors (3839085).

142044739 is an equidigital number, since it uses as much as digits as its factorization.

142044739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3839084.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 142044739 is about 11918.2523467159. The cubic root of 142044739 is about 521.7651294827.

The spelling of 142044739 in words is "one hundred forty-two million, forty-four thousand, seven hundred thirty-nine".