142444433431439 has 4 divisors (see below), whose sum is σ = 142449868401120. Its totient is φ = 142438998461760.

The previous prime is 142444433431331. The next prime is 142444433431543. The reversal of 142444433431439 is 934134334444241.

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 142444433431439 - 2²⁴ = 142444416654223 is a prime.

It is a super-2 number, since 2×142444433431439² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142444433431039) 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, 2717445527 + ... + 2717497944.

It is an arithmetic number, because the mean of its divisors is an integer number (35612467100280).

Almost surely, 2^{142444433431439} is an apocalyptic number.

142444433431439 is a deficient number, since it is larger than the sum of its proper divisors (5434969681).

142444433431439 is an equidigital number, since it uses as much as digits as its factorization.

142444433431439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5434969680.

The product of its digits is 23887872, while the sum is 53.

The spelling of 142444433431439 in words is "one hundred forty-two trillion, four hundred forty-four billion, four hundred thirty-three million, four hundred thirty-one thousand, four hundred thirty-nine".