142549238 has 8 divisors (see below), whose sum is σ = 230271888. Its totient is φ = 65791944.

The previous prime is 142549237. The next prime is 142549289. The reversal of 142549238 is 832945241.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142549237) 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, 2741306 + ... + 2741357.

It is an arithmetic number, because the mean of its divisors is an integer number (28783986).

Almost surely, 2^142549238 is an apocalyptic number.

142549238 is a deficient number, since it is larger than the sum of its proper divisors (87722650).

142549238 is a wasteful number, since it uses less digits than its factorization.

142549238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5482678.

The product of its digits is 69120, while the sum is 38.

The square root of 142549238 is about 11939.3985610666. The cubic root of 142549238 is about 522.3821157557.

The spelling of 142549238 in words is "one hundred forty-two million, five hundred forty-nine thousand, two hundred thirty-eight".