1340333421 has 16 divisors (see below), whose sum is σ = 2044045824. Its totient is φ = 765292464.

The previous prime is 1340333389. The next prime is 1340333437. The reversal of 1340333421 is 1243330431.

It is not a de Polignac number, because 1340333421 - 2⁵ = 1340333389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1340333391 and 1340333400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340333471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2070 + ... + 51816.

It is an arithmetic number, because the mean of its divisors is an integer number (127752864).

Almost surely, 2^1340333421 is an apocalyptic number.

It is an amenable number.

1340333421 is a deficient number, since it is larger than the sum of its proper divisors (703712403).

1340333421 is a wasteful number, since it uses less digits than its factorization.

1340333421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51040.

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 1340333421 is about 36610.5643359946. The cubic root of 1340333421 is about 1102.5652036447.

Adding to 1340333421 its reverse (1243330431), we get a palindrome (2583663852).

The spelling of 1340333421 in words is "one billion, three hundred forty million, three hundred thirty-three thousand, four hundred twenty-one".