2078221442 has 16 divisors (see below), whose sum is σ = 3548584512. Its totient is φ = 903574320.

The previous prime is 2078221441. The next prime is 2078221447. The reversal of 2078221442 is 2441228702.

It is a junction number, because it is equal to n+sod(n) for n = 2078221399 and 2078221408.

It is not an unprimeable number, because it can be changed into a prime (2078221441) 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 in 7 ways as a sum of consecutive naturals, for example, 2053073 + ... + 2054084.

It is an arithmetic number, because the mean of its divisors is an integer number (221786532).

Almost surely, 2^2078221442 is an apocalyptic number.

2078221442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2078221442 is a deficient number, since it is larger than the sum of its proper divisors (1470363070).

2078221442 is a wasteful number, since it uses less digits than its factorization.

2078221442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4107193.

The product of its (nonzero) digits is 14336, while the sum is 32.

The square root of 2078221442 is about 45587.5141019995. The cubic root of 2078221442 is about 1276.1369209538.

It can be divided in two parts, 20782 and 21442, that added together give a palindrome (42224).

The spelling of 2078221442 in words is "two billion, seventy-eight million, two hundred twenty-one thousand, four hundred forty-two".