1244220423 has 8 divisors (see below), whose sum is σ = 1703797488. Its totient is φ = 807061824.

The previous prime is 1244220409. The next prime is 1244220427. The reversal of 1244220423 is 3240224421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1244220423 - 2⁴ = 1244220407 is a prime.

It is a super-2 number, since 2×1244220423² = 3096168922020597858, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1244220393 and 1244220402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244220427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5604486 + ... + 5604707.

It is an arithmetic number, because the mean of its divisors is an integer number (212974686).

Almost surely, 2^1244220423 is an apocalyptic number.

1244220423 is a deficient number, since it is larger than the sum of its proper divisors (459577065).

1244220423 is a wasteful number, since it uses less digits than its factorization.

1244220423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11209233.

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

The square root of 1244220423 is about 35273.5087990974. The cubic root of 1244220423 is about 1075.5545501521.

Adding to 1244220423 its reverse (3240224421), we get a palindrome (4484444844).

The spelling of 1244220423 in words is "one billion, two hundred forty-four million, two hundred twenty thousand, four hundred twenty-three".