403304143421 has 4 divisors (see below), whose sum is σ = 403311639612. Its totient is φ = 403296647232.

The previous prime is 403304143399. The next prime is 403304143433. The reversal of 403304143421 is 124341403304.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 318090360025 + 85213783396 = 563995^2 + 291914^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-403304143421 is a prime.

It is a super-3 number, since 3×403304143421³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403304143721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3666806 + ... + 3775191.

It is an arithmetic number, because the mean of its divisors is an integer number (100827909903).

Almost surely, 2^403304143421 is an apocalyptic number.

It is an amenable number.

403304143421 is a deficient number, since it is larger than the sum of its proper divisors (7496191).

403304143421 is an equidigital number, since it uses as much as digits as its factorization.

403304143421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7496190.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 403304143421 its reverse (124341403304), we get a palindrome (527645546725).

The spelling of 403304143421 in words is "four hundred three billion, three hundred four million, one hundred forty-three thousand, four hundred twenty-one".