242002431 has 16 divisors (see below), whose sum is σ = 391115520. Its totient is φ = 146667960.

The previous prime is 242002427. The next prime is 242002447. The reversal of 242002431 is 134200242.

242002431 is a `hidden beast` number, since 2 + 420 + 0 + 243 + 1 = 666.

It is not a de Polignac number, because 242002431 - 2² = 242002427 is a prime.

It is a super-2 number, since 2×242002431² = 117130353219819522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242002331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 407115 + ... + 407708.

It is an arithmetic number, because the mean of its divisors is an integer number (24444720).

Almost surely, 2^242002431 is an apocalyptic number.

242002431 is a deficient number, since it is larger than the sum of its proper divisors (149113089).

242002431 is a wasteful number, since it uses less digits than its factorization.

242002431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814843 (or 814837 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 242002431 is about 15556.4273212071. The cubic root of 242002431 is about 623.1700550985.

Adding to 242002431 its reverse (134200242), we get a palindrome (376202673).

The spelling of 242002431 in words is "two hundred forty-two million, two thousand, four hundred thirty-one".