342143993 has 4 divisors (see below), whose sum is σ = 353180928. Its totient is φ = 331107060.

The previous prime is 342143983. The next prime is 342144007. The reversal of 342143993 is 399341243.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 399341243 = 7 ⋅57048749.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-342143993 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (342143903) 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, 5518421 + ... + 5518482.

It is an arithmetic number, because the mean of its divisors is an integer number (88295232).

Almost surely, 2^342143993 is an apocalyptic number.

It is an amenable number.

342143993 is a deficient number, since it is larger than the sum of its proper divisors (11036935).

342143993 is a wasteful number, since it uses less digits than its factorization.

342143993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11036934.

The product of its digits is 69984, while the sum is 38.

The square root of 342143993 is about 18497.1347240593. The cubic root of 342143993 is about 699.4171972203.

The spelling of 342143993 in words is "three hundred forty-two million, one hundred forty-three thousand, nine hundred ninety-three".