142204445 has 6 divisors (see below), whose sum is σ = 170677338. Its totient is φ = 113742224.

The previous prime is 142204421. The next prime is 142204451. The reversal of 142204445 is 544402241.

It can be written as a sum of positive squares in 3 ways, for example, as 107288164 + 34916281 = 10358^2 + 5909^2 .

It is not a de Polignac number, because 142204445 - 2¹² = 142200349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23999 + ... + 29331.

It is an arithmetic number, because the mean of its divisors is an integer number (28446223).

Almost surely, 2^142204445 is an apocalyptic number.

It is an amenable number.

142204445 is a deficient number, since it is larger than the sum of its proper divisors (28472893).

142204445 is an frugal number, since it uses more digits than its factorization.

142204445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10671 (or 5338 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 142204445 is about 11924.9505240064. The cubic root of 142204445 is about 521.9606026646.

Multiplying 142204445 by its product of nonzero digits (5120), we get a square (728086758400 = 853280²).

Adding to 142204445 its reverse (544402241), we get a palindrome (686606686).

The spelling of 142204445 in words is "one hundred forty-two million, two hundred four thousand, four hundred forty-five".