243741903 has 16 divisors (see below), whose sum is σ = 353409120. Its totient is φ = 148801536.

The previous prime is 243741863. The next prime is 243741917. The reversal of 243741903 is 309147342.

It is not a de Polignac number, because 243741903 - 2¹² = 243737807 is a prime.

It is a super-2 number, since 2×243741903² = 118820230556122818, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243741923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62698 + ... + 66471.

It is an arithmetic number, because the mean of its divisors is an integer number (22088070).

Almost surely, 2^243741903 is an apocalyptic number.

243741903 is a deficient number, since it is larger than the sum of its proper divisors (109667217).

243741903 is a wasteful number, since it uses less digits than its factorization.

243741903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129226.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 243741903 is about 15612.2356823102. The cubic root of 243741903 is about 624.6595718342.

The spelling of 243741903 in words is "two hundred forty-three million, seven hundred forty-one thousand, nine hundred three".