1344243021 has 8 divisors (see below), whose sum is σ = 1955262624. Its totient is φ = 814692720.

The previous prime is 1344243013. The next prime is 1344243101. The reversal of 1344243021 is 1203424431.

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

It is not a de Polignac number, because 1344243021 - 2³ = 1344243013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1344242982 and 1344243000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1344243011) 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, 20367286 + ... + 20367351.

It is an arithmetic number, because the mean of its divisors is an integer number (244407828).

Almost surely, 2^1344243021 is an apocalyptic number.

1344243021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1344243021 is a deficient number, since it is larger than the sum of its proper divisors (611019603).

1344243021 is a wasteful number, since it uses less digits than its factorization.

1344243021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40734651.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1344243021 is about 36663.9198804492. The cubic root of 1344243021 is about 1103.6361820708.

Adding to 1344243021 its reverse (1203424431), we get a palindrome (2547667452).

The spelling of 1344243021 in words is "one billion, three hundred forty-four million, two hundred forty-three thousand, twenty-one".