1122142142 has 32 divisors (see below), whose sum is σ = 1901613024. Its totient is φ = 496235520.

The previous prime is 1122142127. The next prime is 1122142163. The reversal of 1122142142 is 2412412211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92798 + ... + 104190.

It is an arithmetic number, because the mean of its divisors is an integer number (59425407).

Almost surely, 2^1122142142 is an apocalyptic number.

1122142142 is a deficient number, since it is larger than the sum of its proper divisors (779470882).

1122142142 is a wasteful number, since it uses less digits than its factorization.

1122142142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11465 (or 11443 counting only the distinct ones).

The product of its digits is 256, while the sum is 20.

The square root of 1122142142 is about 33498.3901404232. The cubic root of 1122142142 is about 1039.1604855967.

Adding to 1122142142 its reverse (2412412211), we get a palindrome (3534554353).

The spelling of 1122142142 in words is "one billion, one hundred twenty-two million, one hundred forty-two thousand, one hundred forty-two".