1333400421 has 8 divisors (see below), whose sum is σ = 1778149504. Its totient is φ = 888792480.

The previous prime is 1333400381. The next prime is 1333400461. The reversal of 1333400421 is 1240043331.

It is an interprime number because it is at equal distance from previous prime (1333400381) and next prime (1333400461).

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

It is not a de Polignac number, because 1333400421 - 2¹⁵ = 1333367653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1333400461) 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 7 ways as a sum of consecutive naturals, for example, 10816 + ... + 52761.

It is an arithmetic number, because the mean of its divisors is an integer number (222268688).

Almost surely, 2^1333400421 is an apocalyptic number.

It is an amenable number.

1333400421 is a deficient number, since it is larger than the sum of its proper divisors (444749083).

1333400421 is an equidigital number, since it uses as much as digits as its factorization.

1333400421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70571.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1333400421 is about 36515.7557911650. The cubic root of 1333400421 is about 1100.6608758715.

Adding to 1333400421 its reverse (1240043331), we get a palindrome (2573443752).

The spelling of 1333400421 in words is "one billion, three hundred thirty-three million, four hundred thousand, four hundred twenty-one".