4200042122 has 16 divisors (see below), whose sum is σ = 6330718080. Its totient is φ = 2089815168.

The previous prime is 4200042113. The next prime is 4200042191. The reversal of 4200042122 is 2212400024.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 4200042122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1268393 + ... + 1271699.

It is an arithmetic number, because the mean of its divisors is an integer number (395669880).

Almost surely, 2^4200042122 is an apocalyptic number.

4200042122 is a deficient number, since it is larger than the sum of its proper divisors (2130675958).

4200042122 is a wasteful number, since it uses less digits than its factorization.

4200042122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6205.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 4200042122 is about 64807.7319615492. The cubic root of 4200042122 is about 1613.4340397241.

Adding to 4200042122 its reverse (2212400024), we get a palindrome (6412442146).

The spelling of 4200042122 in words is "four billion, two hundred million, forty-two thousand, one hundred twenty-two".