123120544151 has 16 divisors (see below), whose sum is σ = 140936060160. Its totient is φ = 106463195520.

The previous prime is 123120544139. The next prime is 123120544153. The reversal of 123120544151 is 151445021321.

It is a happy number.

It is not a de Polignac number, because 123120544151 - 2¹⁰ = 123120543127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123120544153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1314050 + ... + 1404623.

It is an arithmetic number, because the mean of its divisors is an integer number (8808503760).

Almost surely, 2^123120544151 is an apocalyptic number.

123120544151 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123120544151 is a deficient number, since it is larger than the sum of its proper divisors (17815516009).

123120544151 is a wasteful number, since it uses less digits than its factorization.

123120544151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2718886.

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 123120544151 its reverse (151445021321), we get a palindrome (274565565472).

The spelling of 123120544151 in words is "one hundred twenty-three billion, one hundred twenty million, five hundred forty-four thousand, one hundred fifty-one".