142122404 has 12 divisors (see below), whose sum is σ = 252217728. Its totient is φ = 70060200.

The previous prime is 142122403. The next prime is 142122437. The reversal of 142122404 is 404221241.

It is not an unprimeable number, because it can be changed into a prime (142122403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249932 + ... + 250499.

It is an arithmetic number, because the mean of its divisors is an integer number (21018144).

Almost surely, 2^142122404 is an apocalyptic number.

It is an amenable number.

142122404 is a deficient number, since it is larger than the sum of its proper divisors (110095324).

142122404 is a wasteful number, since it uses less digits than its factorization.

142122404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500506 (or 500504 counting only the distinct ones).

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

The square root of 142122404 is about 11921.5101392399. The cubic root of 142122404 is about 521.8602063480.

Adding to 142122404 its reverse (404221241), we get a palindrome (546343645).

The spelling of 142122404 in words is "one hundred forty-two million, one hundred twenty-two thousand, four hundred four".