242451 has 24 divisors (see below), whose sum is σ = 399360. Its totient is φ = 140400.

The previous prime is 242449. The next prime is 242453. The reversal of 242451 is 154242.

It is an interprime number because it is at equal distance from previous prime (242449) and next prime (242453).

It is not a de Polignac number, because 242451 - 2¹ = 242449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3030 + ... + 3108.

It is an arithmetic number, because the mean of its divisors is an integer number (16640).

2²⁴²⁴⁵¹ is an apocalyptic number.

242451 is a deficient number, since it is larger than the sum of its proper divisors (156909).

242451 is a wasteful number, since it uses less digits than its factorization.

242451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127 (or 124 counting only the distinct ones).

The product of its digits is 320, while the sum is 18.

The square root of 242451 is about 492.3931356142. The cubic root of 242451 is about 62.3554847698.

Adding to 242451 its reverse (154242), we get a palindrome (396693).

Subtracting from 242451 its reverse (154242), we obtain a square (88209 = 297²).

The spelling of 242451 in words is "two hundred forty-two thousand, four hundred fifty-one".