403220043240 has 128 divisors (see below), whose sum is σ = 1383940581120. Its totient is φ = 92066457600.

The previous prime is 403220043217. The next prime is 403220043251. The reversal of 403220043240 is 42340022304.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 403220043240.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 535380 + ... + 1045500.

It is an arithmetic number, because the mean of its divisors is an integer number (10812035790).

Almost surely, 2^403220043240 is an apocalyptic number.

403220043240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 403220043240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (691970290560).

403220043240 is an abundant number, since it is smaller than the sum of its proper divisors (980720537880).

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

403220043240 is a wasteful number, since it uses less digits than its factorization.

403220043240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511083 (or 511079 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

Adding to 403220043240 its reverse (42340022304), we get a palindrome (445560065544).

The spelling of 403220043240 in words is "four hundred three billion, two hundred twenty million, forty-three thousand, two hundred forty".