1244321242 has 4 divisors (see below), whose sum is σ = 1866481866. Its totient is φ = 622160620.

The previous prime is 1244321231. The next prime is 1244321257. The reversal of 1244321242 is 2421234421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2421234421 = 491 ⋅4931231.

It can be written as a sum of positive squares in only one way, i.e., 1027907721 + 216413521 = 32061^2 + 14711^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311080309 + ... + 311080312.

Almost surely, 2^1244321242 is an apocalyptic number.

1244321242 is a deficient number, since it is larger than the sum of its proper divisors (622160624).

1244321242 is an equidigital number, since it uses as much as digits as its factorization.

1244321242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622160623.

The product of its digits is 3072, while the sum is 25.

The square root of 1244321242 is about 35274.9378737936. The cubic root of 1244321242 is about 1075.5836000437.

Adding to 1244321242 its reverse (2421234421), we get a palindrome (3665555663).

The spelling of 1244321242 in words is "one billion, two hundred forty-four million, three hundred twenty-one thousand, two hundred forty-two".