3540040420 has 24 divisors (see below), whose sum is σ = 8496097344. Its totient is φ = 1213728096.

The previous prime is 3540040417. The next prime is 3540040421. The reversal of 3540040420 is 240400453.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3540040391 and 3540040400.

It is not an unprimeable number, because it can be changed into a prime (3540040421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12642862 + ... + 12643141.

It is an arithmetic number, because the mean of its divisors is an integer number (354004056).

Almost surely, 2^3540040420 is an apocalyptic number.

It is an amenable number.

3540040420 is an abundant number, since it is smaller than the sum of its proper divisors (4956056924).

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

3540040420 is a wasteful number, since it uses less digits than its factorization.

3540040420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25286019 (or 25286017 counting only the distinct ones).

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

The square root of 3540040420 is about 59498.2387974636. The cubic root of 3540040420 is about 1524.0623701463.

Adding to 3540040420 its reverse (240400453), we get a palindrome (3780440873).

The spelling of 3540040420 in words is "three billion, five hundred forty million, forty thousand, four hundred twenty".