2542123345 has 4 divisors (see below), whose sum is σ = 3050548020. Its totient is φ = 2033698672.

The previous prime is 2542123319. The next prime is 2542123351. The reversal of 2542123345 is 5433212452.

2542123345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1258262784 + 1283860561 = 35472^2 + 35831^2 .

It is a cyclic number.

It is not a de Polignac number, because 2542123345 - 2¹³ = 2542115153 is a prime.

It is a super-2 number, since 2×2542123345² = 12924782202387978050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254212330 + ... + 254212339.

It is an arithmetic number, because the mean of its divisors is an integer number (762637005).

Almost surely, 2^2542123345 is an apocalyptic number.

It is an amenable number.

2542123345 is a deficient number, since it is larger than the sum of its proper divisors (508424675).

2542123345 is an equidigital number, since it uses as much as digits as its factorization.

2542123345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508424674.

The product of its digits is 28800, while the sum is 31.

The square root of 2542123345 is about 50419.4738667511. The cubic root of 2542123345 is about 1364.7890821627.

Adding to 2542123345 its reverse (5433212452), we get a palindrome (7975335797).

The spelling of 2542123345 in words is "two billion, five hundred forty-two million, one hundred twenty-three thousand, three hundred forty-five".