42503400040 has 32 divisors (see below), whose sum is σ = 95804392680. Its totient is φ = 16970828032.

The previous prime is 42503400029. The next prime is 42503400101. The reversal of 42503400040 is 4000430524.

It is a happy number.

42503400040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 28277112964 + 14226287076 = 168158^2 + 119274^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42503399984 and 42503400020.

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, 931567 + ... + 976126.

Almost surely, 2^42503400040 is an apocalyptic number.

42503400040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42503400040 is an abundant number, since it is smaller than the sum of its proper divisors (53300992640).

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

42503400040 is a wasteful number, since it uses less digits than its factorization.

42503400040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1908261 (or 1908257 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

Adding to 42503400040 its reverse (4000430524), we get a palindrome (46503830564).

The spelling of 42503400040 in words is "forty-two billion, five hundred three million, four hundred thousand, forty".