142381241 has 4 divisors (see below), whose sum is σ = 142587984. Its totient is φ = 142174500.

The previous prime is 142381237. The next prime is 142381279. The reversal of 142381241 is 142183241.

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: 142183241 = 43 ⋅3306587.

It is a cyclic number.

It is not a de Polignac number, because 142381241 - 2² = 142381237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 142381241.

It is not an unprimeable number, because it can be changed into a prime (142381441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102335 + ... + 103716.

It is an arithmetic number, because the mean of its divisors is an integer number (35646996).

Almost surely, 2^142381241 is an apocalyptic number.

It is an amenable number.

142381241 is a deficient number, since it is larger than the sum of its proper divisors (206743).

142381241 is an equidigital number, since it uses as much as digits as its factorization.

142381241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206742.

The product of its digits is 1536, while the sum is 26.

The square root of 142381241 is about 11932.3610823676. The cubic root of 142381241 is about 522.1768226532.

The spelling of 142381241 in words is "one hundred forty-two million, three hundred eighty-one thousand, two hundred forty-one".