242212143 has 4 divisors (see below), whose sum is σ = 322949528. Its totient is φ = 161474760.

The previous prime is 242212129. The next prime is 242212153. The reversal of 242212143 is 341212242.

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

It is not a de Polignac number, because 242212143 - 2⁴ = 242212127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242212153) 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, 40368688 + ... + 40368693.

It is an arithmetic number, because the mean of its divisors is an integer number (80737382).

Almost surely, 2^242212143 is an apocalyptic number.

242212143 is a deficient number, since it is larger than the sum of its proper divisors (80737385).

242212143 is an equidigital number, since it uses as much as digits as its factorization.

242212143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80737384.

The product of its digits is 768, while the sum is 21.

The square root of 242212143 is about 15563.1662267034. The cubic root of 242212143 is about 623.3500099122.

Adding to 242212143 its reverse (341212242), we get a palindrome (583424385).

Subtracting 242212143 from its reverse (341212242), we obtain a palindrome (99000099).

The spelling of 242212143 in words is "two hundred forty-two million, two hundred twelve thousand, one hundred forty-three".