105434121 has 16 divisors (see below), whose sum is σ = 153961920. Its totient is φ = 63781440.

The previous prime is 105434107. The next prime is 105434149. The reversal of 105434121 is 121434501.

It is not a de Polignac number, because 105434121 - 2¹¹ = 105432073 is a prime.

It is a super-2 number, since 2×105434121² = 22232707742085282, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (105434321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20610 + ... + 25211.

It is an arithmetic number, because the mean of its divisors is an integer number (9622620).

Almost surely, 2^105434121 is an apocalyptic number.

It is an amenable number.

105434121 is a deficient number, since it is larger than the sum of its proper divisors (48527799).

105434121 is a wasteful number, since it uses less digits than its factorization.

105434121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45896.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 105434121 is about 10268.1118517476. Note that the first 3 decimals coincide. The cubic root of 105434121 is about 472.4186786505.

Adding to 105434121 its reverse (121434501), we get a palindrome (226868622).

The spelling of 105434121 in words is "one hundred five million, four hundred thirty-four thousand, one hundred twenty-one".