123555542 has 8 divisors (see below), whose sum is σ = 202181832. Its totient is φ = 56161600.

The previous prime is 123555529. The next prime is 123555557. The reversal of 123555542 is 245555321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 123555499 and 123555508.

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 3 ways as a sum of consecutive naturals, for example, 2808059 + ... + 2808102.

It is an arithmetic number, because the mean of its divisors is an integer number (25272729).

Almost surely, 2^123555542 is an apocalyptic number.

123555542 is a deficient number, since it is larger than the sum of its proper divisors (78626290).

123555542 is a wasteful number, since it uses less digits than its factorization.

123555542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5616174.

The product of its digits is 30000, while the sum is 32.

The square root of 123555542 is about 11115.5540572659. The cubic root of 123555542 is about 498.0665894839.

The spelling of 123555542 in words is "one hundred twenty-three million, five hundred fifty-five thousand, five hundred forty-two".