142404434 has 8 divisors (see below), whose sum is σ = 213750768. Its totient is φ = 71154180.

The previous prime is 142404419. The next prime is 142404469. The reversal of 142404434 is 434404241.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20192 + ... + 26315.

It is an arithmetic number, because the mean of its divisors is an integer number (26718846).

Almost surely, 2^142404434 is an apocalyptic number.

142404434 is a deficient number, since it is larger than the sum of its proper divisors (71346334).

142404434 is a wasteful number, since it uses less digits than its factorization.

142404434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48040.

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 142404434 is about 11933.3328957169. The cubic root of 142404434 is about 522.2051742100.

Adding to 142404434 its reverse (434404241), we get a palindrome (576808675).

The spelling of 142404434 in words is "one hundred forty-two million, four hundred four thousand, four hundred thirty-four".