142331898361 has 27 divisors (see below), whose sum is σ = 152459228271. Its totient is φ = 132865087344.

The previous prime is 142331898341. The next prime is 142331898377. The reversal of 142331898361 is 163898133241.

The square root of 142331898361 is 377269.

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

It can be written as a sum of positive squares in only one way, i.e., 104470521961 + 37861376400 = 323219^2 + 194580^2 .

It is not a de Polignac number, because 142331898361 - 2²⁹ = 141795027449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142331898311) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 407827615 + ... + 407827963.

Almost surely, 2^142331898361 is an apocalyptic number.

142331898361 is the 377269-th square number.

142331898361 is the 188635-th centered octagonal number.

It is an amenable number.

142331898361 is a deficient number, since it is larger than the sum of its proper divisors (10127329910).

142331898361 is an frugal number, since it uses more digits than its factorization.

142331898361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838 (or 419 counting only the distinct ones).

The product of its digits is 746496, while the sum is 49.

Multiplying 142331898361 by its sum of digits (49), we get a square (6974263019689 = 2640883²).

The spelling of 142331898361 in words is "one hundred forty-two billion, three hundred thirty-one million, eight hundred ninety-eight thousand, three hundred sixty-one".