142240411 has 4 divisors (see below), whose sum is σ = 150607512. Its totient is φ = 133873312.

The previous prime is 142240409. The next prime is 142240429. The reversal of 142240411 is 114042241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 142240411 - 2¹ = 142240409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142240481) 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, 4183525 + ... + 4183558.

It is an arithmetic number, because the mean of its divisors is an integer number (37651878).

Almost surely, 2^142240411 is an apocalyptic number.

142240411 is a deficient number, since it is larger than the sum of its proper divisors (8367101).

142240411 is an equidigital number, since it uses as much as digits as its factorization.

142240411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8367100.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 142240411 is about 11926.4584433100. The cubic root of 142240411 is about 522.0046032878.

Adding to 142240411 its reverse (114042241), we get a palindrome (256282652).

The spelling of 142240411 in words is "one hundred forty-two million, two hundred forty thousand, four hundred eleven".