240920491 has 8 divisors (see below), whose sum is σ = 275772384. Its totient is φ = 206177280.

The previous prime is 240920489. The next prime is 240920501. The reversal of 240920491 is 194029042.

It is a happy number.

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 240920491 - 2¹ = 240920489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240920441) 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, 22360 + ... + 31333.

It is an arithmetic number, because the mean of its divisors is an integer number (34471548).

Almost surely, 2^240920491 is an apocalyptic number.

240920491 is a deficient number, since it is larger than the sum of its proper divisors (34851893).

240920491 is an equidigital number, since it uses as much as digits as its factorization.

240920491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54341.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 240920491 is about 15521.6136725535. The cubic root of 240920491 is about 622.2399819418.

The spelling of 240920491 in words is "two hundred forty million, nine hundred twenty thousand, four hundred ninety-one".