423121105 has 32 divisors (see below), whose sum is σ = 563713920. Its totient is φ = 302330880.

The previous prime is 423121099. The next prime is 423121117. The reversal of 423121105 is 501121324.

423121105 = T₁₆₆ + T₁₆₇ + ... + T₁₃₆₄.

It is not a de Polignac number, because 423121105 - 2⁵ = 423121073 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 976969 + ... + 977401.

It is an arithmetic number, because the mean of its divisors is an integer number (17616060).

Almost surely, 2^423121105 is an apocalyptic number.

It is an amenable number.

423121105 is a deficient number, since it is larger than the sum of its proper divisors (140592815).

423121105 is a wasteful number, since it uses less digits than its factorization.

423121105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 423121105 is about 20569.9077538039. The cubic root of 423121105 is about 750.7377067397.

Adding to 423121105 its reverse (501121324), we get a palindrome (924242429).

The spelling of 423121105 in words is "four hundred twenty-three million, one hundred twenty-one thousand, one hundred five".