43402030040 has 32 divisors (see below), whose sum is σ = 97842051360. Its totient is φ = 17327481600.

The previous prime is 43402030039. The next prime is 43402030057. The reversal of 43402030040 is 4003020434.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 43402029994 and 43402030021.

It is a congruent number.

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, 1020476 + ... + 1062155.

It is an arithmetic number, because the mean of its divisors is an integer number (3057564105).

Almost surely, 2^43402030040 is an apocalyptic number.

43402030040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43402030040 is an abundant number, since it is smaller than the sum of its proper divisors (54440021320).

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

43402030040 is a wasteful number, since it uses less digits than its factorization.

43402030040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2083163 (or 2083159 counting only the distinct ones).

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

Adding to 43402030040 its reverse (4003020434), we get a palindrome (47405050474).

The spelling of 43402030040 in words is "forty-three billion, four hundred two million, thirty thousand, forty".