142444433431542 has 128 divisors (see below), whose sum is σ = 331873866289152. Its totient is φ = 40324206384000.

The previous prime is 142444433431331. The next prime is 142444433431543. The reversal of 142444433431542 is 245134334444241.

It is a junction number, because it is equal to n+sod(n) for n = 142444433431491 and 142444433431500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142444433431543) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 723333292 + ... + 723530192.

It is an arithmetic number, because the mean of its divisors is an integer number (2592764580384).

Almost surely, 2^{142444433431542} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142444433431542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165936933144576).

142444433431542 is an abundant number, since it is smaller than the sum of its proper divisors (189429432857610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142444433431542 is a wasteful number, since it uses less digits than its factorization.

142444433431542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208066.

The product of its digits is 8847360, while the sum is 48.

Adding to 142444433431542 its reverse (245134334444241), we get a palindrome (387578767875783).

The spelling of 142444433431542 in words is "one hundred forty-two trillion, four hundred forty-four billion, four hundred thirty-three million, four hundred thirty-one thousand, five hundred forty-two".