42101263 has 4 divisors (see below), whose sum is σ = 42201688. Its totient is φ = 42000840.

The previous prime is 42101261. The next prime is 42101273. The reversal of 42101263 is 36210124.

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

It is a cyclic number.

It is not a de Polignac number, because 42101263 - 2¹ = 42101261 is a prime.

It is a Duffinian number.

42101263 is a modest number, since divided by 1263 gives 421 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 42101263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42101261) 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 3 ways as a sum of consecutive naturals, for example, 49581 + ... + 50422.

It is an arithmetic number, because the mean of its divisors is an integer number (10550422).

Almost surely, 2^42101263 is an apocalyptic number.

42101263 is a deficient number, since it is larger than the sum of its proper divisors (100425).

42101263 is a wasteful number, since it uses less digits than its factorization.

42101263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100424.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 42101263 is about 6488.5486050426. The cubic root of 42101263 is about 347.8817997083.

Adding to 42101263 its reverse (36210124), we get a palindrome (78311387).

The spelling of 42101263 in words is "forty-two million, one hundred one thousand, two hundred sixty-three".