42102305 has 16 divisors (see below), whose sum is σ = 60251904. Its totient is φ = 27614400.

The previous prime is 42102293. The next prime is 42102311. The reversal of 42102305 is 50320124.

It is not a de Polignac number, because 42102305 - 2¹² = 42098209 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25346 + ... + 26955.

It is an arithmetic number, because the mean of its divisors is an integer number (3765744).

Almost surely, 2^42102305 is an apocalyptic number.

It is an amenable number.

42102305 is a deficient number, since it is larger than the sum of its proper divisors (18149599).

42102305 is a wasteful number, since it uses less digits than its factorization.

42102305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52336.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 42102305 is about 6488.6288998524. The cubic root of 42102305 is about 347.8846696922.

Adding to 42102305 its reverse (50320124), we get a palindrome (92422429).

The spelling of 42102305 in words is "forty-two million, one hundred two thousand, three hundred five".