42253645 has 16 divisors (see below), whose sum is σ = 60468480. Its totient is φ = 27713664.

The previous prime is 42253633. The next prime is 42253669. The reversal of 42253645 is 54635224.

42253645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 42253645 - 2⁵ = 42253613 is a prime.

It is a super-3 number, since 3×42253645³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 25440 + ... + 27049.

It is an arithmetic number, because the mean of its divisors is an integer number (3779280).

Almost surely, 2^42253645 is an apocalyptic number.

It is an amenable number.

42253645 is a deficient number, since it is larger than the sum of its proper divisors (18214835).

42253645 is a wasteful number, since it uses less digits than its factorization.

42253645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52524.

The product of its digits is 28800, while the sum is 31.

The square root of 42253645 is about 6500.2803785683. The cubic root of 42253645 is about 348.3010040481.

Adding to 42253645 its reverse (54635224), we get a palindrome (96888869).

The spelling of 42253645 in words is "forty-two million, two hundred fifty-three thousand, six hundred forty-five".