123972241 has 2 divisors, whose sum is σ = 123972242. Its totient is φ = 123972240.

The previous prime is 123972223. The next prime is 123972271. The reversal of 123972241 is 142279321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101929216 + 22043025 = 10096^2 + 4695^2 .

It is an emirp because it is prime and its reverse (142279321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123972241 - 2⁵ = 123972209 is a prime.

It is not a weakly prime, because it can be changed into another prime (123972271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61986120 + 61986121.

It is an arithmetic number, because the mean of its divisors is an integer number (61986121).

Almost surely, 2^123972241 is an apocalyptic number.

It is an amenable number.

123972241 is a deficient number, since it is larger than the sum of its proper divisors (1).

123972241 is an equidigital number, since it uses as much as digits as its factorization.

123972241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 31.

The square root of 123972241 is about 11134.2822400009. The cubic root of 123972241 is about 498.6258817241.

The spelling of 123972241 in words is "one hundred twenty-three million, nine hundred seventy-two thousand, two hundred forty-one".