242431438 has 4 divisors (see below), whose sum is σ = 363647160. Its totient is φ = 121215718.

The previous prime is 242431433. The next prime is 242431471. The reversal of 242431438 is 834134242.

It is a happy number.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242431433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60607858 + ... + 60607861.

It is an arithmetic number, because the mean of its divisors is an integer number (90911790).

Almost surely, 2^242431438 is an apocalyptic number.

242431438 is a deficient number, since it is larger than the sum of its proper divisors (121215722).

242431438 is a wasteful number, since it uses less digits than its factorization.

242431438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121215721.

The product of its digits is 18432, while the sum is 31.

The square root of 242431438 is about 15570.2099536262. The cubic root of 242431438 is about 623.5380768754.

The spelling of 242431438 in words is "two hundred forty-two million, four hundred thirty-one thousand, four hundred thirty-eight".