142555420444 has 36 divisors (see below), whose sum is σ = 255027205216. Its totient is φ = 69724396224.

The previous prime is 142555420369. The next prime is 142555420493. The reversal of 142555420444 is 444024555241.

It is a super-2 number, since 2×142555420444² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 142555420397 and 142555420406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25241629 + ... + 25247275.

Almost surely, 2^142555420444 is an apocalyptic number.

It is an amenable number.

142555420444 is a deficient number, since it is larger than the sum of its proper divisors (112471784772).

142555420444 is a wasteful number, since it uses less digits than its factorization.

142555420444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8602 (or 8553 counting only the distinct ones).

The product of its (nonzero) digits is 512000, while the sum is 40.

Adding to 142555420444 its reverse (444024555241), we get a palindrome (586579975685).

The spelling of 142555420444 in words is "one hundred forty-two billion, five hundred fifty-five million, four hundred twenty thousand, four hundred forty-four".