42130505 has 24 divisors (see below), whose sum is σ = 56537352. Its totient is φ = 30030336.

The previous prime is 42130481. The next prime is 42130513. The reversal of 42130505 is 50503124.

It can be written as a sum of positive squares in 4 ways, for example, as 22024249 + 20106256 = 4693^2 + 4484^2 .

It is not a de Polignac number, because 42130505 - 2⁶ = 42130441 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29999 + ... + 31371.

It is an arithmetic number, because the mean of its divisors is an integer number (2355723).

Almost surely, 2^42130505 is an apocalyptic number.

It is an amenable number.

42130505 is a deficient number, since it is larger than the sum of its proper divisors (14406847).

42130505 is a wasteful number, since it uses less digits than its factorization.

42130505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1433 (or 1414 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 42130505 is about 6490.8015683735. The cubic root of 42130505 is about 347.9623230668.

Adding to 42130505 its reverse (50503124), we get a palindrome (92633629).

The spelling of 42130505 in words is "forty-two million, one hundred thirty thousand, five hundred five".