1344126421 has 4 divisors (see below), whose sum is σ = 1466319744. Its totient is φ = 1221933100.

The previous prime is 1344126419. The next prime is 1344126457. The reversal of 1344126421 is 1246214431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1344126421 - 2¹ = 1344126419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1344126421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1344123421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61096645 + ... + 61096666.

It is an arithmetic number, because the mean of its divisors is an integer number (366579936).

Almost surely, 2^1344126421 is an apocalyptic number.

1344126421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1344126421 is a deficient number, since it is larger than the sum of its proper divisors (122193323).

1344126421 is a wasteful number, since it uses less digits than its factorization.

1344126421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122193322.

The product of its digits is 4608, while the sum is 28.

The square root of 1344126421 is about 36662.3297268463. The cubic root of 1344126421 is about 1103.6042712487.

It can be divided in two parts, 1344 and 126421, that added together give a triangular number (127765 = T₅₀₅).

The spelling of 1344126421 in words is "one billion, three hundred forty-four million, one hundred twenty-six thousand, four hundred twenty-one".