1422140042 has 4 divisors (see below), whose sum is σ = 2133210066. Its totient is φ = 711070020.

The previous prime is 1422140003. The next prime is 1422140059. The reversal of 1422140042 is 2400412241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2400412241 = 53 ⋅45290797.

It can be written as a sum of positive squares in only one way, i.e., 863243161 + 558896881 = 29381^2 + 23641^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1422139996 and 1422140023.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 355535009 + ... + 355535012.

Almost surely, 2^1422140042 is an apocalyptic number.

1422140042 is a deficient number, since it is larger than the sum of its proper divisors (711070024).

1422140042 is an equidigital number, since it uses as much as digits as its factorization.

1422140042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711070023.

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

The square root of 1422140042 is about 37711.2720814347. The cubic root of 1422140042 is about 1124.5552261881. Note that the first 3 decimals are identical.

Adding to 1422140042 its reverse (2400412241), we get a palindrome (3822552283).

The spelling of 1422140042 in words is "one billion, four hundred twenty-two million, one hundred forty thousand, forty-two".