2542389449 has 4 divisors (see below), whose sum is σ = 2676199440. Its totient is φ = 2408579460.

The previous prime is 2542389439. The next prime is 2542389511. The reversal of 2542389449 is 9449832452.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2542389449 - 2¹² = 2542385353 is a prime.

It is a super-2 number, since 2×2542389449² = 12927488220773047202, 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 = 2542389397 and 2542389406.

It is not an unprimeable number, because it can be changed into a prime (2542389439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66904967 + ... + 66905004.

It is an arithmetic number, because the mean of its divisors is an integer number (669049860).

Almost surely, 2^2542389449 is an apocalyptic number.

It is an amenable number.

2542389449 is a deficient number, since it is larger than the sum of its proper divisors (133809991).

2542389449 is a wasteful number, since it uses less digits than its factorization.

2542389449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133809990.

The product of its digits is 2488320, while the sum is 50.

The square root of 2542389449 is about 50422.1126986960. The cubic root of 2542389449 is about 1364.8367015624.

The spelling of 2542389449 in words is "two billion, five hundred forty-two million, three hundred eighty-nine thousand, four hundred forty-nine".