243145741 has 8 divisors (see below), whose sum is σ = 251264000. Its totient is φ = 235044720.

The previous prime is 243145687. The next prime is 243145751. The reversal of 243145741 is 147541342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 243145741 - 2⁹ = 243145229 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243145751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28435 + ... + 35983.

It is an arithmetic number, because the mean of its divisors is an integer number (31408000).

Almost surely, 2^243145741 is an apocalyptic number.

It is an amenable number.

243145741 is a deficient number, since it is larger than the sum of its proper divisors (8118259).

243145741 is a wasteful number, since it uses less digits than its factorization.

243145741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8619.

The product of its digits is 13440, while the sum is 31.

The square root of 243145741 is about 15593.1312121716. The cubic root of 243145741 is about 624.1498765084.

The spelling of 243145741 in words is "two hundred forty-three million, one hundred forty-five thousand, seven hundred forty-one".