1242440441 has 8 divisors (see below), whose sum is σ = 1384228224. Its totient is φ = 1105459120.

The previous prime is 1242440411. The next prime is 1242440443. The reversal of 1242440441 is 1440442421.

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 1242440441 - 2⁶ = 1242440377 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1242440441.

It is not an unprimeable number, because it can be changed into a prime (1242440443) 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, 1201070 + ... + 1202103.

It is an arithmetic number, because the mean of its divisors is an integer number (173028528).

Almost surely, 2^1242440441 is an apocalyptic number.

1242440441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1242440441 is a deficient number, since it is larger than the sum of its proper divisors (141787783).

1242440441 is a wasteful number, since it uses less digits than its factorization.

1242440441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2403231.

The product of its (nonzero) digits is 4096, while the sum is 26.

The square root of 1242440441 is about 35248.2686241466. The cubic root of 1242440441 is about 1075.0414091855.

Adding to 1242440441 its reverse (1440442421), we get a palindrome (2682882862).

The spelling of 1242440441 in words is "one billion, two hundred forty-two million, four hundred forty thousand, four hundred forty-one".