240144421 has 16 divisors (see below), whose sum is σ = 269111808. Its totient is φ = 212396800.

The previous prime is 240144407. The next prime is 240144433. The reversal of 240144421 is 124441042.

It is not a de Polignac number, because 240144421 - 2⁹ = 240143909 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 240144392 and 240144401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240144451) 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, 277836 + ... + 278698.

It is an arithmetic number, because the mean of its divisors is an integer number (16819488).

Almost surely, 2^240144421 is an apocalyptic number.

It is an amenable number.

240144421 is a deficient number, since it is larger than the sum of its proper divisors (28967387).

240144421 is a wasteful number, since it uses less digits than its factorization.

240144421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1532.

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 240144421 is about 15496.5938515533. The cubic root of 240144421 is about 621.5711288695.

Adding to 240144421 its reverse (124441042), we get a palindrome (364585463).

The spelling of 240144421 in words is "two hundred forty million, one hundred forty-four thousand, four hundred twenty-one".