42254045 has 4 divisors (see below), whose sum is σ = 50704860. Its totient is φ = 33803232.

The previous prime is 42254041. The next prime is 42254053. The reversal of 42254045 is 54045224.

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 11195716 + 31058329 = 3346^2 + 5573^2 .

It is a cyclic number.

It is not a de Polignac number, because 42254045 - 2² = 42254041 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42254041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4225400 + ... + 4225409.

It is an arithmetic number, because the mean of its divisors is an integer number (12676215).

Almost surely, 2^42254045 is an apocalyptic number.

It is an amenable number.

42254045 is a deficient number, since it is larger than the sum of its proper divisors (8450815).

42254045 is an equidigital number, since it uses as much as digits as its factorization.

42254045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8450814.

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 42254045 is about 6500.3111463991. The cubic root of 42254045 is about 348.3021031246.

Adding to 42254045 its reverse (54045224), we get a palindrome (96299269).

It can be divided in two parts, 42 and 254045, that multiplied together give a triangular number (10669890 = T₄₆₁₉).

The spelling of 42254045 in words is "forty-two million, two hundred fifty-four thousand, forty-five".