42253636 has 24 divisors (see below), whose sum is σ = 78533280. Its totient is φ = 19823232.

The previous prime is 42253633. The next prime is 42253669. The reversal of 42253636 is 63635224.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 42253598 and 42253607.

It is not an unprimeable number, because it can be changed into a prime (42253633) 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 7 ways as a sum of consecutive naturals, for example, 27751 + ... + 29233.

It is an arithmetic number, because the mean of its divisors is an integer number (3272220).

Almost surely, 2^42253636 is an apocalyptic number.

It is an amenable number.

42253636 is a deficient number, since it is larger than the sum of its proper divisors (36279644).

42253636 is a wasteful number, since it uses less digits than its factorization.

42253636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1923 (or 1921 counting only the distinct ones).

The product of its digits is 25920, while the sum is 31.

The square root of 42253636 is about 6500.2796862904. The cubic root of 42253636 is about 348.3009793188.

The spelling of 42253636 in words is "forty-two million, two hundred fifty-three thousand, six hundred thirty-six".