2143550123 has 8 divisors (see below), whose sum is σ = 2518296816. Its totient is φ = 1798783200.

The previous prime is 2143550117. The next prime is 2143550141. The reversal of 2143550123 is 3210553412.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2143550123 - 2⁴ = 2143550107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2143550092 and 2143550101.

It is not an unprimeable number, because it can be changed into a prime (2143550183) 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, 7494788 + ... + 7495073.

It is an arithmetic number, because the mean of its divisors is an integer number (314787102).

Almost surely, 2^2143550123 is an apocalyptic number.

2143550123 is a deficient number, since it is larger than the sum of its proper divisors (374746693).

2143550123 is a wasteful number, since it uses less digits than its factorization.

2143550123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14989885.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 2143550123 is about 46298.4894246022. The cubic root of 2143550123 is about 1289.3709496371.

The spelling of 2143550123 in words is "two billion, one hundred forty-three million, five hundred fifty thousand, one hundred twenty-three".