123295290 has 16 divisors (see below), whose sum is σ = 295908768. Its totient is φ = 32878736.

The previous prime is 123295273. The next prime is 123295307. The reversal of 123295290 is 92592321.

It is an interprime number because it is at equal distance from previous prime (123295273) and next prime (123295307).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2054892 + ... + 2054951.

It is an arithmetic number, because the mean of its divisors is an integer number (18494298).

Almost surely, 2^123295290 is an apocalyptic number.

123295290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123295290 is an abundant number, since it is smaller than the sum of its proper divisors (172613478).

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

123295290 is a wasteful number, since it uses less digits than its factorization.

123295290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4109853.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 123295290 is about 11103.8412272510. The cubic root of 123295290 is about 497.7166417567.

The spelling of 123295290 in words is "one hundred twenty-three million, two hundred ninety-five thousand, two hundred ninety".