1242444443 has 16 divisors (see below), whose sum is σ = 1318920960. Its totient is φ = 1168473600.

The previous prime is 1242444433. The next prime is 1242444481. The reversal of 1242444443 is 3444442421.

It is a cyclic number.

It is not a de Polignac number, because 1242444443 - 2¹⁴ = 1242428059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1242444403) 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, 350303 + ... + 353831.

It is an arithmetic number, because the mean of its divisors is an integer number (82432560).

Almost surely, 2^1242444443 is an apocalyptic number.

1242444443 is a deficient number, since it is larger than the sum of its proper divisors (76476517).

1242444443 is a wasteful number, since it uses less digits than its factorization.

1242444443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3878.

The product of its digits is 49152, while the sum is 32.

The square root of 1242444443 is about 35248.3253928467. The cubic root of 1242444443 is about 1075.0425634490.

Adding to 1242444443 its reverse (3444442421), we get a palindrome (4686886864).

The spelling of 1242444443 in words is "one billion, two hundred forty-two million, four hundred forty-four thousand, four hundred forty-three".