142344217 has 8 divisors (see below), whose sum is σ = 152548416. Its totient is φ = 132474672.

The previous prime is 142344199. The next prime is 142344229. The reversal of 142344217 is 712443241.

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

It is a cyclic number.

It is not a de Polignac number, because 142344217 - 2⁷ = 142344089 is a prime.

It is a super-2 number, since 2×142344217² = 40523752226686178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142344277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82783 + ... + 84484.

It is an arithmetic number, because the mean of its divisors is an integer number (19068552).

Almost surely, 2^142344217 is an apocalyptic number.

It is an amenable number.

142344217 is a deficient number, since it is larger than the sum of its proper divisors (10204199).

142344217 is a wasteful number, since it uses less digits than its factorization.

142344217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167327.

The product of its digits is 5376, while the sum is 28.

The square root of 142344217 is about 11930.8095701842. The cubic root of 142344217 is about 522.1315574424.

Adding to 142344217 its reverse (712443241), we get a palindrome (854787458).

The spelling of 142344217 in words is "one hundred forty-two million, three hundred forty-four thousand, two hundred seventeen".