1242444403 has 2 divisors, whose sum is σ = 1242444404. Its totient is φ = 1242444402.

The previous prime is 1242444377. The next prime is 1242444421. The reversal of 1242444403 is 3044442421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1242444403 - 2²⁵ = 1208889971 is a prime.

It is not a weakly prime, because it can be changed into another prime (1242444433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621222201 + 621222202.

It is an arithmetic number, because the mean of its divisors is an integer number (621222202).

Almost surely, 2^1242444403 is an apocalyptic number.

1242444403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242444403 is an equidigital number, since it uses as much as digits as its factorization.

1242444403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12288, while the sum is 28.

The square root of 1242444403 is about 35248.3248254438. The cubic root of 1242444403 is about 1075.0425519122.

Adding to 1242444403 its reverse (3044442421), we get a palindrome (4286886824).

The spelling of 1242444403 in words is "one billion, two hundred forty-two million, four hundred forty-four thousand, four hundred three".