142912729444 has 9 divisors (see below), whose sum is σ = 250098599667. Its totient is φ = 71455986684.

The previous prime is 142912729417. The next prime is 142912729447. The reversal of 142912729444 is 444927219241.

The square root of 142912729444 is 378038.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142912729447) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 661567 + ... + 850585.

Almost surely, 2^142912729444 is an apocalyptic number.

142912729444 is the 378038-th square number.

It is an amenable number.

142912729444 is a deficient number, since it is larger than the sum of its proper divisors (107185870223).

142912729444 is an frugal number, since it uses more digits than its factorization.

142912729444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378042 (or 189021 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 49.

Multiplying 142912729444 by its sum of digits (49), we get a square (7002723742756 = 2646266²).

It can be divided in two parts, 142912 and 729444, that added together give a square (872356 = 934²).

The spelling of 142912729444 in words is "one hundred forty-two billion, nine hundred twelve million, seven hundred twenty-nine thousand, four hundred forty-four".