142134402 has 32 divisors (see below), whose sum is σ = 300625920. Its totient is φ = 44675280.

The previous prime is 142134397. The next prime is 142134409. The reversal of 142134402 is 204431241.

It is not an unprimeable number, because it can be changed into a prime (142134409) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 22627 + ... + 28217.

It is an arithmetic number, because the mean of its divisors is an integer number (9394560).

Almost surely, 2^142134402 is an apocalyptic number.

142134402 is an abundant number, since it is smaller than the sum of its proper divisors (158491518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142134402 is a wasteful number, since it uses less digits than its factorization.

142134402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5838.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 142134402 is about 11922.0133366810. The cubic root of 142134402 is about 521.8748911136.

Adding to 142134402 its reverse (204431241), we get a palindrome (346565643).

The spelling of 142134402 in words is "one hundred forty-two million, one hundred thirty-four thousand, four hundred two".