142349 has 4 divisors (see below), whose sum is σ = 143136. Its totient is φ = 141564.

The previous prime is 142327. The next prime is 142357. The reversal of 142349 is 943241.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32 + ... + 534.

It is an arithmetic number, because the mean of its divisors is an integer number (35784).

2¹⁴²³⁴⁹ is an apocalyptic number.

It is an amenable number.

142349 is a deficient number, since it is larger than the sum of its proper divisors (787).

142349 is an equidigital number, since it uses as much as digits as its factorization.

142349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786.

The product of its digits is 864, while the sum is 23.

The square root of 142349 is about 377.2916643659. The cubic root of 142349 is about 52.2137405537.

The spelling of 142349 in words is "one hundred forty-two thousand, three hundred forty-nine".