2042221078 has 4 divisors (see below), whose sum is σ = 3063331620. Its totient is φ = 1021110538.

The previous prime is 2042221073. The next prime is 2042221079. The reversal of 2042221078 is 8701222402.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2042221073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510555268 + ... + 510555271.

It is an arithmetic number, because the mean of its divisors is an integer number (765832905).

Almost surely, 2^2042221078 is an apocalyptic number.

2042221078 is a deficient number, since it is larger than the sum of its proper divisors (1021110542).

2042221078 is a wasteful number, since it uses less digits than its factorization.

2042221078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021110541.

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 2042221078 is about 45190.9402203583. The cubic root of 2042221078 is about 1268.7252544924.

The spelling of 2042221078 in words is "two billion, forty-two million, two hundred twenty-one thousand, seventy-eight".