42493869 has 24 divisors (see below), whose sum is σ = 69202560. Its totient is φ = 25751880.

The previous prime is 42493849. The next prime is 42493907. The reversal of 42493869 is 96839424.

42493869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42493869 - 2⁵ = 42493837 is a prime.

It is a super-2 number, since 2×42493869² = 3611457805178322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42493849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3237 + ... + 9770.

It is an arithmetic number, because the mean of its divisors is an integer number (2883440).

Almost surely, 2^42493869 is an apocalyptic number.

It is an amenable number.

42493869 is a deficient number, since it is larger than the sum of its proper divisors (26708691).

42493869 is a wasteful number, since it uses less digits than its factorization.

42493869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13038 (or 13021 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 42493869 is about 6518.7321620082. The cubic root of 42493869 is about 348.9598205537.

It can be divided in two parts, 4249 and 3869, that added together give a palindrome (8118).

The spelling of 42493869 in words is "forty-two million, four hundred ninety-three thousand, eight hundred sixty-nine".