13124142021 has 8 divisors (see below), whose sum is σ = 17533236960. Its totient is φ = 8732237552.

The previous prime is 13124142011. The next prime is 13124142037. The reversal of 13124142021 is 12024142131.

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

It is a cyclic number.

It is not a de Polignac number, because 13124142021 - 2⁹ = 13124141509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13124142011) 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, 4295835 + ... + 4298888.

It is an arithmetic number, because the mean of its divisors is an integer number (2191654620).

Almost surely, 2^13124142021 is an apocalyptic number.

It is an amenable number.

13124142021 is a deficient number, since it is larger than the sum of its proper divisors (4409094939).

13124142021 is an equidigital number, since it uses as much as digits as its factorization.

13124142021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8595235.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 13124142021 its reverse (12024142131), we get a palindrome (25148284152).

The spelling of 13124142021 in words is "thirteen billion, one hundred twenty-four million, one hundred forty-two thousand, twenty-one".