2042340455 has 4 divisors (see below), whose sum is σ = 2450808552. Its totient is φ = 1633872360.

The previous prime is 2042340449. The next prime is 2042340497. The reversal of 2042340455 is 5540432402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5540432402 = 2 ⋅2770216201.

It is not a de Polignac number, because 2042340455 - 2²² = 2038146151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 204234041 + ... + 204234050.

It is an arithmetic number, because the mean of its divisors is an integer number (612702138).

Almost surely, 2^2042340455 is an apocalyptic number.

2042340455 is a deficient number, since it is larger than the sum of its proper divisors (408468097).

2042340455 is an equidigital number, since it uses as much as digits as its factorization.

2042340455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408468096.

The product of its (nonzero) digits is 19200, while the sum is 29.

The square root of 2042340455 is about 45192.2610078319. The cubic root of 2042340455 is about 1268.7499749084.

Adding to 2042340455 its reverse (5540432402), we get a palindrome (7582772857).

The spelling of 2042340455 in words is "two billion, forty-two million, three hundred forty thousand, four hundred fifty-five".