243101042 has 4 divisors (see below), whose sum is σ = 364651566. Its totient is φ = 121550520.

The previous prime is 243101021. The next prime is 243101057. The reversal of 243101042 is 240101342.

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., 242393761 + 707281 = 15569^2 + 841^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 243101042.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60775259 + ... + 60775262.

Almost surely, 2^243101042 is an apocalyptic number.

243101042 is a deficient number, since it is larger than the sum of its proper divisors (121550524).

243101042 is a wasteful number, since it uses less digits than its factorization.

243101042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121550523.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 243101042 is about 15591.6978549483. The cubic root of 243101042 is about 624.1116270412. Note that the first 3 decimals are identical.

Adding to 243101042 its reverse (240101342), we get a palindrome (483202384).

It can be divided in two parts, 24310 and 1042, that added together give a palindrome (25352).

The spelling of 243101042 in words is "two hundred forty-three million, one hundred one thousand, forty-two".