142215241 has 4 divisors (see below), whose sum is σ = 162531712. Its totient is φ = 121898772.

The previous prime is 142215221. The next prime is 142215253. The reversal of 142215241 is 142512241.

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.

It is a cyclic number.

It is not a de Polignac number, because 142215241 - 2⁷ = 142215113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142215211) 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, 10158225 + ... + 10158238.

It is an arithmetic number, because the mean of its divisors is an integer number (40632928).

Almost surely, 2^142215241 is an apocalyptic number.

It is an amenable number.

142215241 is a deficient number, since it is larger than the sum of its proper divisors (20316471).

142215241 is an equidigital number, since it uses as much as digits as its factorization.

142215241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20316470.

The product of its digits is 640, while the sum is 22.

The square root of 142215241 is about 11925.4031797671. The cubic root of 142215241 is about 521.9738112158.

Adding to 142215241 its reverse (142512241), we get a palindrome (284727482).

The spelling of 142215241 in words is "one hundred forty-two million, two hundred fifteen thousand, two hundred forty-one".