42109263 has 48 divisors (see below), whose sum is σ = 74014720. Its totient is φ = 22534848.

The previous prime is 42109261. The next prime is 42109267. The reversal of 42109263 is 36290124.

It is not a de Polignac number, because 42109263 - 2¹ = 42109261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42109261) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 151881 + ... + 152157.

Almost surely, 2^42109263 is an apocalyptic number.

42109263 is a deficient number, since it is larger than the sum of its proper divisors (31905457).

42109263 is a wasteful number, since it uses less digits than its factorization.

42109263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436 (or 433 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 42109263 is about 6489.1650464447. The cubic root of 42109263 is about 347.9038329201.

Adding to 42109263 its reverse (36290124), we get a palindrome (78399387).

The spelling of 42109263 in words is "forty-two million, one hundred nine thousand, two hundred sixty-three".