242646394 has 4 divisors (see below), whose sum is σ = 363969594. Its totient is φ = 121323196.

The previous prime is 242646347. The next prime is 242646401. The reversal of 242646394 is 493646242.

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

It can be written as a sum of positive squares in only one way, i.e., 157176369 + 85470025 = 12537^2 + 9245^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 60661597 + ... + 60661600.

Almost surely, 2^242646394 is an apocalyptic number.

242646394 is a deficient number, since it is larger than the sum of its proper divisors (121323200).

242646394 is a wasteful number, since it uses less digits than its factorization.

242646394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121323199.

The product of its digits is 248832, while the sum is 40.

The square root of 242646394 is about 15577.1112212759. Note that the first 3 decimals coincide. The cubic root of 242646394 is about 623.7223126841.

The spelling of 242646394 in words is "two hundred forty-two million, six hundred forty-six thousand, three hundred ninety-four".