123255542 has 16 divisors (see below), whose sum is σ = 197260272. Its totient is φ = 57557760.

The previous prime is 123255533. The next prime is 123255557. The reversal of 123255542 is 245552321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9383 + ... + 18290.

It is an arithmetic number, because the mean of its divisors is an integer number (12328767).

Almost surely, 2^123255542 is an apocalyptic number.

123255542 is a deficient number, since it is larger than the sum of its proper divisors (74004730).

123255542 is a wasteful number, since it uses less digits than its factorization.

123255542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27823.

The product of its digits is 12000, while the sum is 29.

The square root of 123255542 is about 11102.0512519084. The cubic root of 123255542 is about 497.6631512912.

The spelling of 123255542 in words is "one hundred twenty-three million, two hundred fifty-five thousand, five hundred forty-two".