242091578 has 16 divisors (see below), whose sum is σ = 386860320. Its totient is φ = 113291856.

The previous prime is 242091557. The next prime is 242091581. The reversal of 242091578 is 875190242.

242091578 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35225 + ... + 41532.

It is an arithmetic number, because the mean of its divisors is an integer number (24178770).

Almost surely, 2^242091578 is an apocalyptic number.

242091578 is a deficient number, since it is larger than the sum of its proper divisors (144768742).

242091578 is a wasteful number, since it uses less digits than its factorization.

242091578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76861.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 242091578 is about 15559.2923360929. The cubic root of 242091578 is about 623.2465652401.

The spelling of 242091578 in words is "two hundred forty-two million, ninety-one thousand, five hundred seventy-eight".