1422540243 has 6 divisors (see below), whose sum is σ = 2054780364. Its totient is φ = 948360156.

The previous prime is 1422540199. The next prime is 1422540247. The reversal of 1422540243 is 3420452241.

It is not a de Polignac number, because 1422540243 - 2¹⁴ = 1422523859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1422540247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 79030005 + ... + 79030022.

It is an arithmetic number, because the mean of its divisors is an integer number (342463394).

Almost surely, 2^1422540243 is an apocalyptic number.

1422540243 is a deficient number, since it is larger than the sum of its proper divisors (632240121).

1422540243 is a wasteful number, since it uses less digits than its factorization.

1422540243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158060033 (or 158060030 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 1422540243 is about 37716.5778272632. The cubic root of 1422540243 is about 1124.6607024196.

Adding to 1422540243 its reverse (3420452241), we get a palindrome (4842992484).

The spelling of 1422540243 in words is "one billion, four hundred twenty-two million, five hundred forty thousand, two hundred forty-three".