1422142111 has 4 divisors (see below), whose sum is σ = 1531537672. Its totient is φ = 1312746552.

The previous prime is 1422142103. The next prime is 1422142151. The reversal of 1422142111 is 1112412241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1112412241 = 20879 ⋅53279.

It is not a de Polignac number, because 1422142111 - 2³ = 1422142103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1422142151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54697761 + ... + 54697786.

It is an arithmetic number, because the mean of its divisors is an integer number (382884418).

Almost surely, 2^1422142111 is an apocalyptic number.

1422142111 is a deficient number, since it is larger than the sum of its proper divisors (109395561).

1422142111 is a wasteful number, since it uses less digits than its factorization.

1422142111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109395560.

The product of its digits is 128, while the sum is 19.

The square root of 1422142111 is about 37711.2995135410. The cubic root of 1422142111 is about 1124.5557715408. Note that the first 3 decimals are identical.

Adding to 1422142111 its reverse (1112412241), we get a palindrome (2534554352).

The spelling of 1422142111 in words is "one billion, four hundred twenty-two million, one hundred forty-two thousand, one hundred eleven".