1222042142 has 16 divisors (see below), whose sum is σ = 1885615632. Its totient is φ = 593556480.

The previous prime is 1222042139. The next prime is 1222042153. The reversal of 1222042142 is 2412402221.

It is a super-3 number, since 3×1222042142³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

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, 34553 + ... + 60315.

It is an arithmetic number, because the mean of its divisors is an integer number (117850977).

Almost surely, 2^1222042142 is an apocalyptic number.

1222042142 is a deficient number, since it is larger than the sum of its proper divisors (663573490).

1222042142 is a wasteful number, since it uses less digits than its factorization.

1222042142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26443.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1222042142 is about 34957.7193478064. The cubic root of 1222042142 is about 1069.1255971017.

Adding to 1222042142 its reverse (2412402221), we get a palindrome (3634444363).

The spelling of 1222042142 in words is "one billion, two hundred twenty-two million, forty-two thousand, one hundred forty-two".