123740022289 has 9 divisors (see below), whose sum is σ = 133995627003. Its totient is φ = 114217337832.

The previous prime is 123740022223. The next prime is 123740022317. The reversal of 123740022289 is 982220047321.

It is a happy number.

The square root of 123740022289 is 351767.

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., 18304737025 + 105435285264 = 135295^2 + 324708^2 .

It is not a de Polignac number, because 123740022289 - 2²⁹ = 123203151377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123740022389) 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, 4559442 + ... + 4586500.

Almost surely, 2^123740022289 is an apocalyptic number.

123740022289 is the 351767-th square number.

123740022289 is the 175884-th centered octagonal number.

It is an amenable number.

123740022289 is a deficient number, since it is larger than the sum of its proper divisors (10255604714).

123740022289 is an frugal number, since it uses more digits than its factorization.

123740022289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54144 (or 27072 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 123740022289 in words is "one hundred twenty-three billion, seven hundred forty million, twenty-two thousand, two hundred eighty-nine".