142444433431438 has 8 divisors (see below), whose sum is σ = 213667693765632. Its totient is φ = 71221868842896.

The previous prime is 142444433431331. The next prime is 142444433431543. The reversal of 142444433431438 is 834134334444241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173424270 + ... + 174243697.

It is an arithmetic number, because the mean of its divisors is an integer number (26708461720704).

Almost surely, 2^{142444433431438} is an apocalyptic number.

142444433431438 is a deficient number, since it is larger than the sum of its proper divisors (71223260334194).

142444433431438 is a wasteful number, since it uses less digits than its factorization.

142444433431438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347872826.

The product of its digits is 21233664, while the sum is 52.

Adding to 142444433431438 its reverse (834134334444241), we get a palindrome (976578767875679).

The spelling of 142444433431438 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-eight".