123297261 has 12 divisors (see below), whose sum is σ = 169874496. Its totient is φ = 79544760.

The previous prime is 123297259. The next prime is 123297313. The reversal of 123297261 is 162792321.

It is not a de Polignac number, because 123297261 - 2¹ = 123297259 is a prime.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123297661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18501 + ... + 24266.

It is an arithmetic number, because the mean of its divisors is an integer number (14156208).

Almost surely, 2^123297261 is an apocalyptic number.

It is an amenable number.

123297261 is a deficient number, since it is larger than the sum of its proper divisors (46577235).

123297261 is an equidigital number, since it uses as much as digits as its factorization.

123297261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42832 (or 42801 counting only the distinct ones).

The product of its digits is 9072, while the sum is 33.

The square root of 123297261 is about 11103.9299799666. The cubic root of 123297261 is about 497.7192939106.

The spelling of 123297261 in words is "one hundred twenty-three million, two hundred ninety-seven thousand, two hundred sixty-one".