123892281 has 16 divisors (see below), whose sum is σ = 186555520. Its totient is φ = 81239760.

The previous prime is 123892273. The next prime is 123892289. The reversal of 123892281 is 182298321.

It is an interprime number because it is at equal distance from previous prime (123892273) and next prime (123892289).

It is not a de Polignac number, because 123892281 - 2³ = 123892273 is a prime.

It is a super-2 number, since 2×123892281² = 30698594582765922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123892289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35965 + ... + 39258.

It is an arithmetic number, because the mean of its divisors is an integer number (11659720).

Almost surely, 2^123892281 is an apocalyptic number.

It is an amenable number.

123892281 is a deficient number, since it is larger than the sum of its proper divisors (62663239).

123892281 is an equidigital number, since it uses as much as digits as its factorization.

123892281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75293 (or 75287 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 123892281 is about 11130.6909489034. The cubic root of 123892281 is about 498.5186569128.

The spelling of 123892281 in words is "one hundred twenty-three million, eight hundred ninety-two thousand, two hundred eighty-one".