55242123 has 8 divisors (see below), whose sum is σ = 73789248. Its totient is φ = 36761544.

The previous prime is 55242107. The next prime is 55242127. The reversal of 55242123 is 32124255.

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

It is not a de Polignac number, because 55242123 - 2⁴ = 55242107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55242093 and 55242102.

It is not an unprimeable number, because it can be changed into a prime (55242127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14665 + ... + 18042.

It is an arithmetic number, because the mean of its divisors is an integer number (9223656).

Almost surely, 2^55242123 is an apocalyptic number.

55242123 is a deficient number, since it is larger than the sum of its proper divisors (18547125).

55242123 is a wasteful number, since it uses less digits than its factorization.

55242123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33273.

The product of its digits is 2400, while the sum is 24.

The square root of 55242123 is about 7432.5044904124. The cubic root of 55242123 is about 380.8524790376.

Adding to 55242123 its reverse (32124255), we get a palindrome (87366378).

The spelling of 55242123 in words is "fifty-five million, two hundred forty-two thousand, one hundred twenty-three".