42250745 has 4 divisors (see below), whose sum is σ = 50700900. Its totient is φ = 33800592.

The previous prime is 42250727. The next prime is 42250753. The reversal of 42250745 is 54705224.

It is a happy number.

42250745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10316944 + 31933801 = 3212^2 + 5651^2 .

It is a cyclic number.

It is not a de Polignac number, because 42250745 - 2²² = 38056441 is a prime.

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 3 ways as a sum of consecutive naturals, for example, 4225070 + ... + 4225079.

It is an arithmetic number, because the mean of its divisors is an integer number (12675225).

Almost surely, 2^42250745 is an apocalyptic number.

It is an amenable number.

42250745 is a deficient number, since it is larger than the sum of its proper divisors (8450155).

42250745 is an equidigital number, since it uses as much as digits as its factorization.

42250745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8450154.

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 42250745 is about 6500.0573074397. The cubic root of 42250745 is about 348.2930355362.

Adding to 42250745 its reverse (54705224), we get a palindrome (96955969).

The spelling of 42250745 in words is "forty-two million, two hundred fifty thousand, seven hundred forty-five".