240131421 has 12 divisors (see below), whose sum is σ = 347575072. Its totient is φ = 159755976.

The previous prime is 240131407. The next prime is 240131447. The reversal of 240131421 is 124131042.

240131421 is a `hidden beast` number, since 240 + 1 + 3 + 1 + 421 = 666.

240131421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 240131421 - 2⁵ = 240131389 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 240131394 and 240131403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240151421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23011 + ... + 31776.

Almost surely, 2^240131421 is an apocalyptic number.

It is an amenable number.

240131421 is a deficient number, since it is larger than the sum of its proper divisors (107443651).

240131421 is a wasteful number, since it uses less digits than its factorization.

240131421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55280 (or 55277 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 240131421 is about 15496.1743988637. The cubic root of 240131421 is about 621.5599126044.

Adding to 240131421 its reverse (124131042), we get a palindrome (364262463).

The spelling of 240131421 in words is "two hundred forty million, one hundred thirty-one thousand, four hundred twenty-one".