2042820427 has 4 divisors (see below), whose sum is σ = 2044533960. Its totient is φ = 2041106896.

The previous prime is 2042820421. The next prime is 2042820457. The reversal of 2042820427 is 7240282402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7240282402 = 2 ⋅3620141201.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2042820427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2042820421) by changing a digit.

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, 854977 + ... + 857362.

It is an arithmetic number, because the mean of its divisors is an integer number (511133490).

Almost surely, 2^2042820427 is an apocalyptic number.

2042820427 is a deficient number, since it is larger than the sum of its proper divisors (1713533).

2042820427 is a wasteful number, since it uses less digits than its factorization.

2042820427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1713532.

The product of its (nonzero) digits is 14336, while the sum is 31.

The square root of 2042820427 is about 45197.5710298684. The cubic root of 2042820427 is about 1268.8493570924.

The spelling of 2042820427 in words is "two billion, forty-two million, eight hundred twenty thousand, four hundred twenty-seven".