243920074 has 8 divisors (see below), whose sum is σ = 371033568. Its totient is φ = 120242220.

The previous prime is 243920069. The next prime is 243920077. The reversal of 243920074 is 470029342.

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

It is not an unprimeable number, because it can be changed into a prime (243920077) 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, 858732 + ... + 859015.

It is an arithmetic number, because the mean of its divisors is an integer number (46379196).

Almost surely, 2^243920074 is an apocalyptic number.

243920074 is a deficient number, since it is larger than the sum of its proper divisors (127113494).

243920074 is a wasteful number, since it uses less digits than its factorization.

243920074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1717820.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 243920074 is about 15617.9407733542. The cubic root of 243920074 is about 624.8117397786.

The spelling of 243920074 in words is "two hundred forty-three million, nine hundred twenty thousand, seventy-four".