1381421043 has 12 divisors (see below), whose sum is σ = 1996476768. Its totient is φ = 920443920.

The previous prime is 1381421029. The next prime is 1381421081. The reversal of 1381421043 is 3401241831.

It is not a de Polignac number, because 1381421043 - 2⁶ = 1381420979 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1381420998 and 1381421016.

It is not an unprimeable number, because it can be changed into a prime (1381411043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24180 + ... + 57857.

It is an arithmetic number, because the mean of its divisors is an integer number (166373064).

Almost surely, 2^1381421043 is an apocalyptic number.

1381421043 is a deficient number, since it is larger than the sum of its proper divisors (615055725).

1381421043 is a wasteful number, since it uses less digits than its factorization.

1381421043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83914 (or 83911 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1381421043 is about 37167.4729165167. The cubic root of 1381421043 is about 1113.7182998758.

Adding to 1381421043 its reverse (3401241831), we get a palindrome (4782662874).

The spelling of 1381421043 in words is "one billion, three hundred eighty-one million, four hundred twenty-one thousand, forty-three".