3540020403 has 8 divisors (see below), whose sum is σ = 4722052816. Its totient is φ = 2359000800.

The previous prime is 3540020371. The next prime is 3540020437. The reversal of 3540020403 is 3040200453.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3540020403 - 2⁵ = 3540020371 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3540020403.

It is not an unprimeable number, because it can be changed into a prime (3540021403) 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, 245008 + ... + 259053.

It is an arithmetic number, because the mean of its divisors is an integer number (590256602).

Almost surely, 2^3540020403 is an apocalyptic number.

3540020403 is a deficient number, since it is larger than the sum of its proper divisors (1182032413).

3540020403 is a wasteful number, since it uses less digits than its factorization.

3540020403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506405.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 3540020403 is about 59498.0705821626. The cubic root of 3540020403 is about 1524.0594975601.

Adding to 3540020403 its reverse (3040200453), we get a palindrome (6580220856).

The spelling of 3540020403 in words is "three billion, five hundred forty million, twenty thousand, four hundred three".