403020043040 has 48 divisors (see below), whose sum is σ = 952381903032. Its totient is φ = 161166188544.

The previous prime is 403020043037. The next prime is 403020043079. The reversal of 403020043040 is 40340020304.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 205560678544 + 197459364496 = 453388^2 + 444364^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295472 + ... + 945168.

Almost surely, 2^403020043040 is an apocalyptic number.

403020043040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

403020043040 is an abundant number, since it is smaller than the sum of its proper divisors (549361859992).

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

403020043040 is a wasteful number, since it uses less digits than its factorization.

403020043040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653589 (or 653581 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

Adding to 403020043040 its reverse (40340020304), we get a palindrome (443360063344).

The spelling of 403020043040 in words is "four hundred three billion, twenty million, forty-three thousand, forty".