42131105 has 4 divisors (see below), whose sum is σ = 50557332. Its totient is φ = 33704880.

The previous prime is 42131093. The next prime is 42131119. The reversal of 42131105 is 50113124.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17648401 + 24482704 = 4201^2 + 4948^2 .

It is not a de Polignac number, because 42131105 - 2⁸ = 42130849 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4213106 + ... + 4213115.

It is an arithmetic number, because the mean of its divisors is an integer number (12639333).

Almost surely, 2^42131105 is an apocalyptic number.

It is an amenable number.

42131105 is a deficient number, since it is larger than the sum of its proper divisors (8426227).

42131105 is an equidigital number, since it uses as much as digits as its factorization.

42131105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8426226.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 42131105 is about 6490.8477874620. The cubic root of 42131105 is about 347.9639748897.

Adding to 42131105 its reverse (50113124), we get a palindrome (92244229).

The spelling of 42131105 in words is "forty-two million, one hundred thirty-one thousand, one hundred five".