3540121523 has 4 divisors (see below), whose sum is σ = 3555717000. Its totient is φ = 3524526048.

The previous prime is 3540121499. The next prime is 3540121537. The reversal of 3540121523 is 3251210453.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3540121523 - 2¹⁰ = 3540120499 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3540121492 and 3540121501.

It is not an unprimeable number, because it can be changed into a prime (3540121573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7797398 + ... + 7797851.

It is an arithmetic number, because the mean of its divisors is an integer number (888929250).

Almost surely, 2^3540121523 is an apocalyptic number.

3540121523 is a deficient number, since it is larger than the sum of its proper divisors (15595477).

3540121523 is a wasteful number, since it uses less digits than its factorization.

3540121523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15595476.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 3540121523 is about 59498.9203515492. The cubic root of 3540121523 is about 1524.0740089104.

Adding to 3540121523 its reverse (3251210453), we get a palindrome (6791331976).

The spelling of 3540121523 in words is "three billion, five hundred forty million, one hundred twenty-one thousand, five hundred twenty-three".