105435421 has 16 divisors (see below), whose sum is σ = 131711104. Its totient is φ = 82171584.

The previous prime is 105435413. The next prime is 105435431. The reversal of 105435421 is 124534501.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 105435421 - 2³ = 105435413 is a prime.

It is a super-2 number, since 2×105435421² = 22233256002894482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105435401) 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, 2550 + ... + 14743.

It is an arithmetic number, because the mean of its divisors is an integer number (8231944).

Almost surely, 2^105435421 is an apocalyptic number.

It is an amenable number.

105435421 is a deficient number, since it is larger than the sum of its proper divisors (26275683).

105435421 is a wasteful number, since it uses less digits than its factorization.

105435421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17380.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 105435421 is about 10268.1751543300. The cubic root of 105435421 is about 472.4206202792.

Adding to 105435421 its reverse (124534501), we get a palindrome (229969922).

The spelling of 105435421 in words is "one hundred five million, four hundred thirty-five thousand, four hundred twenty-one".