42745633 has 8 divisors (see below), whose sum is σ = 51725952. Its totient is φ = 34483776.

The previous prime is 42745627. The next prime is 42745663. The reversal of 42745633 is 33654724.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42745633 - 2⁵ = 42745601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42745603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179485 + ... + 179722.

It is an arithmetic number, because the mean of its divisors is an integer number (6465744).

Almost surely, 2^42745633 is an apocalyptic number.

It is an amenable number.

42745633 is a deficient number, since it is larger than the sum of its proper divisors (8980319).

42745633 is a wasteful number, since it uses less digits than its factorization.

42745633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359231.

The product of its digits is 60480, while the sum is 34.

The square root of 42745633 is about 6538.0144539455. The cubic root of 42745633 is about 349.6476263080.

Subtracting from 42745633 its reverse (33654724), we obtain a palindrome (9090909).

The spelling of 42745633 in words is "forty-two million, seven hundred forty-five thousand, six hundred thirty-three".