243124290 has 48 divisors (see below), whose sum is σ = 638284608. Its totient is φ = 64201248.

The previous prime is 243124267. The next prime is 243124319. The reversal of 243124290 is 92421342.

243124290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3844 + ... + 22383.

It is an arithmetic number, because the mean of its divisors is an integer number (13297596).

Almost surely, 2^243124290 is an apocalyptic number.

243124290 is an abundant number, since it is smaller than the sum of its proper divisors (395160318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243124290 is a wasteful number, since it uses less digits than its factorization.

243124290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26343 (or 26340 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 243124290 is about 15592.4433620905. The cubic root of 243124290 is about 624.1315212170.

The spelling of 243124290 in words is "two hundred forty-three million, one hundred twenty-four thousand, two hundred ninety".