123155442033 has 16 divisors (see below), whose sum is σ = 176878020480. Its totient is φ = 75771062784.

The previous prime is 123155442031. The next prime is 123155442071. The reversal of 123155442033 is 330244551321.

It is not a de Polignac number, because 123155442033 - 2¹ = 123155442031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123155441985 and 123155442003.

It is not an unprimeable number, because it can be changed into a prime (123155442031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173853 + ... + 525866.

It is an arithmetic number, because the mean of its divisors is an integer number (11054876280).

Almost surely, 2^123155442033 is an apocalyptic number.

123155442033 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

123155442033 is a deficient number, since it is larger than the sum of its proper divisors (53722578447).

123155442033 is a wasteful number, since it uses less digits than its factorization.

123155442033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704248.

The product of its (nonzero) digits is 43200, while the sum is 33.

Adding to 123155442033 its reverse (330244551321), we get a palindrome (453399993354).

The spelling of 123155442033 in words is "one hundred twenty-three billion, one hundred fifty-five million, four hundred forty-two thousand, thirty-three".