240232421 has 16 divisors (see below), whose sum is σ = 282683520. Its totient is φ = 201270720.

The previous prime is 240232417. The next prime is 240232459. The reversal of 240232421 is 124232042.

It is a cyclic number.

It is not a de Polignac number, because 240232421 - 2² = 240232417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 240232393 and 240232402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240232481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139715 + ... + 141423.

It is an arithmetic number, because the mean of its divisors is an integer number (17667720).

Almost surely, 2^240232421 is an apocalyptic number.

It is an amenable number.

240232421 is a deficient number, since it is larger than the sum of its proper divisors (42451099).

240232421 is a wasteful number, since it uses less digits than its factorization.

240232421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2716.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 240232421 is about 15499.4329251105. The cubic root of 240232421 is about 621.6470437144.

Adding to 240232421 its reverse (124232042), we get a palindrome (364464463).

The spelling of 240232421 in words is "two hundred forty million, two hundred thirty-two thousand, four hundred twenty-one".