123261255 has 48 divisors (see below), whose sum is σ = 240117696. Its totient is φ = 58037760.

The previous prime is 123261241. The next prime is 123261269. The reversal of 123261255 is 552162321.

It is a happy number.

123261255 is a `hidden beast` number, since 12 + 32 + 612 + 5 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (123261241) and next prime (123261269).

It is not a de Polignac number, because 123261255 - 2¹² = 123257159 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8875 + ... + 18035.

It is an arithmetic number, because the mean of its divisors is an integer number (5002452).

Almost surely, 2^123261255 is an apocalyptic number.

123261255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

123261255 is a deficient number, since it is larger than the sum of its proper divisors (116856441).

123261255 is a wasteful number, since it uses less digits than its factorization.

123261255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9208 (or 9205 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 123261255 is about 11102.3085437219. The cubic root of 123261255 is about 497.6708402102.

The spelling of 123261255 in words is "one hundred twenty-three million, two hundred sixty-one thousand, two hundred fifty-five".