1344423420 has 120 divisors (see below), whose sum is σ = 4227126288. Its totient is φ = 357696000.

The previous prime is 1344423403. The next prime is 1344423433. The reversal of 1344423420 is 243244431.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1118820 + ... + 1120020.

Almost surely, 2^1344423420 is an apocalyptic number.

1344423420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1344423420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2113563144).

1344423420 is an abundant number, since it is smaller than the sum of its proper divisors (2882702868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1344423420 is a wasteful number, since it uses less digits than its factorization.

1344423420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1913 (or 1902 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 1344423420 is about 36666.3799685761. The cubic root of 1344423420 is about 1103.6855496218.

Adding to 1344423420 its reverse (243244431), we get a palindrome (1587667851).

It can be divided in two parts, 13444 and 23420, that added together give a square (36864 = 192²).

The spelling of 1344423420 in words is "one billion, three hundred forty-four million, four hundred twenty-three thousand, four hundred twenty".