123802881 has 4 divisors (see below), whose sum is σ = 165070512. Its totient is φ = 82535252.

The previous prime is 123802873. The next prime is 123802897. The reversal of 123802881 is 188208321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123802881 - 2³ = 123802873 is a prime.

It is a super-2 number, since 2×123802881² = 30654306687800322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (123802681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20633811 + ... + 20633816.

It is an arithmetic number, because the mean of its divisors is an integer number (41267628).

Almost surely, 2^123802881 is an apocalyptic number.

It is an amenable number.

123802881 is a deficient number, since it is larger than the sum of its proper divisors (41267631).

123802881 is an equidigital number, since it uses as much as digits as its factorization.

123802881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41267630.

The product of its (nonzero) digits is 6144, while the sum is 33.

The square root of 123802881 is about 11126.6743009760. The cubic root of 123802881 is about 498.3987186036.

The spelling of 123802881 in words is "one hundred twenty-three million, eight hundred two thousand, eight hundred eighty-one".