142117442 has 8 divisors (see below), whose sum is σ = 214248000. Its totient is φ = 70701444.

The previous prime is 142117441. The next prime is 142117453. The reversal of 142117442 is 244711241.

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

It is not an unprimeable number, because it can be changed into a prime (142117441) 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, 178142 + ... + 178937.

It is an arithmetic number, because the mean of its divisors is an integer number (26781000).

Almost surely, 2^142117442 is an apocalyptic number.

142117442 is a deficient number, since it is larger than the sum of its proper divisors (72130558).

142117442 is a wasteful number, since it uses less digits than its factorization.

142117442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357280.

The product of its digits is 1792, while the sum is 26.

The square root of 142117442 is about 11921.3020262050. The cubic root of 142117442 is about 521.8541329436.

Adding to 142117442 its reverse (244711241), we get a palindrome (386828683).

The spelling of 142117442 in words is "one hundred forty-two million, one hundred seventeen thousand, four hundred forty-two".