14105542121 has 4 divisors (see below), whose sum is σ = 15387864144. Its totient is φ = 12823220100.

The previous prime is 14105542117. The next prime is 14105542163. The reversal of 14105542121 is 12124550141.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 14105542121 - 2² = 14105542117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14105542181) 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, 641160995 + ... + 641161016.

It is an arithmetic number, because the mean of its divisors is an integer number (3846966036).

Almost surely, 2^14105542121 is an apocalyptic number.

14105542121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

14105542121 is a deficient number, since it is larger than the sum of its proper divisors (1282322023).

14105542121 is a wasteful number, since it uses less digits than its factorization.

14105542121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282322022.

The product of its (nonzero) digits is 1600, while the sum is 26.

The spelling of 14105542121 in words is "fourteen billion, one hundred five million, five hundred forty-two thousand, one hundred twenty-one".