242279851 has 4 divisors (see below), whose sum is σ = 264305304. Its totient is φ = 220254400.

The previous prime is 242279837. The next prime is 242279867. The reversal of 242279851 is 158972242.

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 242279851 - 2⁵ = 242279819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242279881) 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, 11012710 + ... + 11012731.

It is an arithmetic number, because the mean of its divisors is an integer number (66076326).

Almost surely, 2^242279851 is an apocalyptic number.

242279851 is a deficient number, since it is larger than the sum of its proper divisors (22025453).

242279851 is a wasteful number, since it uses less digits than its factorization.

242279851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22025452.

The product of its digits is 80640, while the sum is 40.

The square root of 242279851 is about 15565.3413390134. The cubic root of 242279851 is about 623.4080882698.

The spelling of 242279851 in words is "two hundred forty-two million, two hundred seventy-nine thousand, eight hundred fifty-one".