142454159761 has 9 divisors (see below), whose sum is σ = 142920296379. Its totient is φ = 141989542200.

The previous prime is 142454159759. The next prime is 142454159779. The reversal of 142454159761 is 167951454241.

The square root of 142454159761 is 377431.

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., 113110469761 + 29343690000 = 336319^2 + 171300^2 .

It is not a de Polignac number, because 142454159761 - 2¹ = 142454159759 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142454153761) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 215512771 + ... + 215513431.

It is an arithmetic number, because the mean of its divisors is an integer number (15880032931).

Almost surely, 2^142454159761 is an apocalyptic number.

142454159761 is the 377431-st square number.

142454159761 is the 188716-th centered octagonal number.

It is an amenable number.

142454159761 is a deficient number, since it is larger than the sum of its proper divisors (466136618).

142454159761 is an frugal number, since it uses more digits than its factorization.

142454159761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2464 (or 1232 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 49.

Multiplying 142454159761 by its sum of digits (49), we get a square (6980253828289 = 2642017²).

The spelling of 142454159761 in words is "one hundred forty-two billion, four hundred fifty-four million, one hundred fifty-nine thousand, seven hundred sixty-one".