142240311 has 12 divisors (see below), whose sum is σ = 205659792. Its totient is φ = 94733856.

The previous prime is 142240297. The next prime is 142240361. The reversal of 142240311 is 113042241.

It is not a de Polignac number, because 142240311 - 2⁵ = 142240279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142240361) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2670 + ... + 17076.

It is an arithmetic number, because the mean of its divisors is an integer number (17138316).

Almost surely, 2^142240311 is an apocalyptic number.

142240311 is a deficient number, since it is larger than the sum of its proper divisors (63419481).

142240311 is a wasteful number, since it uses less digits than its factorization.

142240311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15510 (or 15507 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 142240311 is about 11926.4542509499. The cubic root of 142240311 is about 522.0044809586.

Adding to 142240311 its reverse (113042241), we get a palindrome (255282552).

The spelling of 142240311 in words is "one hundred forty-two million, two hundred forty thousand, three hundred eleven".