2042345451 has 4 divisors (see below), whose sum is σ = 2723127272. Its totient is φ = 1361563632.

The previous prime is 2042345449. The next prime is 2042345509. The reversal of 2042345451 is 1545432402.

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

It is not a de Polignac number, because 2042345451 - 2¹ = 2042345449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2042345411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340390906 + ... + 340390911.

It is an arithmetic number, because the mean of its divisors is an integer number (680781818).

Almost surely, 2^2042345451 is an apocalyptic number.

2042345451 is a deficient number, since it is larger than the sum of its proper divisors (680781821).

2042345451 is an equidigital number, since it uses as much as digits as its factorization.

2042345451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680781820.

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 2042345451 is about 45192.3162827488. The cubic root of 2042345451 is about 1268.7510094518.

Adding to 2042345451 its reverse (1545432402), we get a palindrome (3587777853).

The spelling of 2042345451 in words is "two billion, forty-two million, three hundred forty-five thousand, four hundred fifty-one".