242951 has 4 divisors (see below), whose sum is σ = 244992. Its totient is φ = 240912.

The previous prime is 242927. The next prime is 242971. The reversal of 242951 is 159242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 159242 = 2 ⋅79621.

It is a cyclic number.

It is not a de Polignac number, because 242951 - 2⁶ = 242887 is a prime.

It is a d-powerful number, because it can be written as 2¹⁵ + 4⁴ + 9³ + 2¹⁷ + 5⁷ + 1 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242911) 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, 830 + ... + 1083.

It is an arithmetic number, because the mean of its divisors is an integer number (61248).

2²⁴²⁹⁵¹ is an apocalyptic number.

242951 is a deficient number, since it is larger than the sum of its proper divisors (2041).

242951 is a wasteful number, since it uses less digits than its factorization.

242951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2040.

The product of its digits is 720, while the sum is 23.

The square root of 242951 is about 492.9005984983. The cubic root of 242951 is about 62.3983200019.

The spelling of 242951 in words is "two hundred forty-two thousand, nine hundred fifty-one".