403343121040 has 20 divisors (see below), whose sum is σ = 937772756604. Its totient is φ = 161337248384.

The previous prime is 403343121029. The next prime is 403343121091. The reversal of 403343121040 is 40121343304.

It can be written as a sum of positive squares in 2 ways, for example, as 100719908496 + 302623212544 = 317364^2 + 550112^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 403343120996 and 403343121014.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2520894427 + ... + 2520894586.

Almost surely, 2^403343121040 is an apocalyptic number.

403343121040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

403343121040 is an abundant number, since it is smaller than the sum of its proper divisors (534429635564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

403343121040 is a wasteful number, since it uses less digits than its factorization.

403343121040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5041789026 (or 5041789020 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 403343121040 its reverse (40121343304), we get a palindrome (443464464344).

The spelling of 403343121040 in words is "four hundred three billion, three hundred forty-three million, one hundred twenty-one thousand, forty".