123285969 has 10 divisors (see below), whose sum is σ = 184168050. Its totient is φ = 82190592.

The previous prime is 123285923. The next prime is 123285973. The reversal of 123285969 is 969582321.

It can be written as a sum of positive squares in only one way, i.e., 122943744 + 342225 = 11088^2 + 585^2 .

It is a de Polignac number, because none of the positive numbers 2^k-123285969 is a prime.

It is a super-2 number, since 2×123285969² = 30398860304537922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123285919) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 760944 + ... + 761105.

It is an arithmetic number, because the mean of its divisors is an integer number (18416805).

Almost surely, 2^123285969 is an apocalyptic number.

It is an amenable number.

123285969 is a deficient number, since it is larger than the sum of its proper divisors (60882081).

123285969 is an equidigital number, since it uses as much as digits as its factorization.

123285969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1522061 (or 1522052 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 123285969 is about 11103.4214997000. The cubic root of 123285969 is about 497.7040991480.

The spelling of 123285969 in words is "one hundred twenty-three million, two hundred eighty-five thousand, nine hundred sixty-nine".