1442400243 has 4 divisors (see below), whose sum is σ = 1923200328. Its totient is φ = 961600160.

The previous prime is 1442400233. The next prime is 1442400251. The reversal of 1442400243 is 3420042441.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1442400243 - 2¹² = 1442396147 is a prime.

It is a super-2 number, since 2×1442400243² = 4161036922012918098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1442400233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240400038 + ... + 240400043.

It is an arithmetic number, because the mean of its divisors is an integer number (480800082).

Almost surely, 2^1442400243 is an apocalyptic number.

1442400243 is a deficient number, since it is larger than the sum of its proper divisors (480800085).

1442400243 is an equidigital number, since it uses as much as digits as its factorization.

1442400243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480800084.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 1442400243 is about 37978.9447325752. The cubic root of 1442400243 is about 1129.8703072498.

Adding to 1442400243 its reverse (3420042441), we get a palindrome (4862442684).

The spelling of 1442400243 in words is "one billion, four hundred forty-two million, four hundred thousand, two hundred forty-three".