240292421 has 8 divisors (see below), whose sum is σ = 244033944. Its totient is φ = 236563200.

The previous prime is 240292397. The next prime is 240292453. The reversal of 240292421 is 124292042.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 168636196 + 71656225 = 12986^2 + 8465^2 .

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 240292421 - 2¹⁰ = 240291397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240292321) 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, 41135 + ... + 46611.

It is an arithmetic number, because the mean of its divisors is an integer number (30504243).

Almost surely, 2^240292421 is an apocalyptic number.

It is an amenable number.

240292421 is a deficient number, since it is larger than the sum of its proper divisors (3741523).

240292421 is an equidigital number, since it uses as much as digits as its factorization.

240292421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6151.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 240292421 is about 15501.3683589546. The cubic root of 240292421 is about 621.6987932072.

The spelling of 240292421 in words is "two hundred forty million, two hundred ninety-two thousand, four hundred twenty-one".