2142401123 has 4 divisors (see below), whose sum is σ = 2142520128. Its totient is φ = 2142282120.

The previous prime is 2142401113. The next prime is 2142401161. The reversal of 2142401123 is 3211042412.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2142401123 - 2²⁶ = 2075292259 is a prime.

It is a super-2 number, since 2×2142401123² = 9179765143663322258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2142401095 and 2142401104.

It is not an unprimeable number, because it can be changed into a prime (2142401113) 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 3 ways as a sum of consecutive naturals, for example, 26336 + ... + 70557.

It is an arithmetic number, because the mean of its divisors is an integer number (535630032).

Almost surely, 2^2142401123 is an apocalyptic number.

2142401123 is a deficient number, since it is larger than the sum of its proper divisors (119005).

2142401123 is an equidigital number, since it uses as much as digits as its factorization.

2142401123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119004.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2142401123 is about 46286.0791491351. The cubic root of 2142401123 is about 1289.1405293964.

Adding to 2142401123 its reverse (3211042412), we get a palindrome (5353443535).

The spelling of 2142401123 in words is "two billion, one hundred forty-two million, four hundred one thousand, one hundred twenty-three".