423542105 has 16 divisors (see below), whose sum is σ = 581902464. Its totient is φ = 289906560.

The previous prime is 423542099. The next prime is 423542107. The reversal of 423542105 is 501245324.

It is a happy number.

It is not a de Polignac number, because 423542105 - 2⁴ = 423542089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423542107) 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, 9389 + ... + 30581.

It is an arithmetic number, because the mean of its divisors is an integer number (36368904).

Almost surely, 2^423542105 is an apocalyptic number.

It is an amenable number.

423542105 is a deficient number, since it is larger than the sum of its proper divisors (158360359).

423542105 is a wasteful number, since it uses less digits than its factorization.

423542105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21776.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 423542105 is about 20580.1386049754. The cubic root of 423542105 is about 750.9866156244.

Adding to 423542105 its reverse (501245324), we get a palindrome (924787429).

The spelling of 423542105 in words is "four hundred twenty-three million, five hundred forty-two thousand, one hundred five".