123085428 has 24 divisors (see below), whose sum is σ = 287437920. Its totient is φ = 40994400.

The previous prime is 123085427. The next prime is 123085429. The reversal of 123085428 is 824580321.

It is an interprime number because it is at equal distance from previous prime (123085427) and next prime (123085429).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123085427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13878 + ... + 20946.

It is an arithmetic number, because the mean of its divisors is an integer number (11976580).

Almost surely, 2^123085428 is an apocalyptic number.

It is an amenable number.

123085428 is an abundant number, since it is smaller than the sum of its proper divisors (164352492).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123085428 is a wasteful number, since it uses less digits than its factorization.

123085428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8527 (or 8525 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 123085428 is about 11094.3872295860. The cubic root of 123085428 is about 497.4340920914.

The spelling of 123085428 in words is "one hundred twenty-three million, eighty-five thousand, four hundred twenty-eight".