2542123445 has 4 divisors (see below), whose sum is σ = 3050548140. Its totient is φ = 2033698752.

The previous prime is 2542123421. The next prime is 2542123483. The reversal of 2542123445 is 5443212452.

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 879359716 + 1662763729 = 29654^2 + 40777^2 .

It is a cyclic number.

It is not a de Polignac number, because 2542123445 - 2¹⁶ = 2542057909 is a prime.

It is a congruent number.

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, 254212340 + ... + 254212349.

It is an arithmetic number, because the mean of its divisors is an integer number (762637035).

Almost surely, 2^2542123445 is an apocalyptic number.

It is an amenable number.

2542123445 is a deficient number, since it is larger than the sum of its proper divisors (508424695).

2542123445 is an equidigital number, since it uses as much as digits as its factorization.

2542123445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508424694.

The product of its digits is 38400, while the sum is 32.

The square root of 2542123445 is about 50419.4748584314. The cubic root of 2542123445 is about 1364.7891000584.

Adding to 2542123445 its reverse (5443212452), we get a palindrome (7985335897).

The spelling of 2542123445 in words is "two billion, five hundred forty-two million, one hundred twenty-three thousand, four hundred forty-five".