5154123121 has 32 divisors (see below), whose sum is σ = 6368544000. Its totient is φ = 4070787072.

The previous prime is 5154123119. The next prime is 5154123131. The reversal of 5154123121 is 1213214515.

It is a cyclic number.

It is not a de Polignac number, because 5154123121 - 2¹ = 5154123119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5154123131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1887285 + ... + 1890013.

It is an arithmetic number, because the mean of its divisors is an integer number (199017000).

Almost surely, 2^5154123121 is an apocalyptic number.

It is an amenable number.

5154123121 is a deficient number, since it is larger than the sum of its proper divisors (1214420879).

5154123121 is a wasteful number, since it uses less digits than its factorization.

5154123121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3081.

The product of its digits is 1200, while the sum is 25.

The square root of 5154123121 is about 71792.2218697820. The cubic root of 5154123121 is about 1727.3682373151.

Adding to 5154123121 its reverse (1213214515), we get a palindrome (6367337636).

The spelling of 5154123121 in words is "five billion, one hundred fifty-four million, one hundred twenty-three thousand, one hundred twenty-one".