243761141 has 4 divisors (see below), whose sum is σ = 262512012. Its totient is φ = 225010272.

The previous prime is 243761093. The next prime is 243761149. The reversal of 243761141 is 141167342.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 53597041 + 190164100 = 7321^2 + 13790^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243761141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243761149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9375416 + ... + 9375441.

It is an arithmetic number, because the mean of its divisors is an integer number (65628003).

Almost surely, 2^243761141 is an apocalyptic number.

It is an amenable number.

243761141 is a deficient number, since it is larger than the sum of its proper divisors (18750871).

243761141 is a wasteful number, since it uses less digits than its factorization.

243761141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18750870.

The product of its digits is 4032, while the sum is 29.

The square root of 243761141 is about 15612.8517894714. The cubic root of 243761141 is about 624.6760057267.

The spelling of 243761141 in words is "two hundred forty-three million, seven hundred sixty-one thousand, one hundred forty-one".