42452545 has 8 divisors (see below), whose sum is σ = 51142824. Its totient is φ = 33828864.

The previous prime is 42452537. The next prime is 42452551. The reversal of 42452545 is 54525424.

It can be written as a sum of positive squares in 4 ways, for example, as 3214849 + 39237696 = 1793^2 + 6264^2 .

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 42452545 - 2³ = 42452537 is a prime.

It is a super-3 number, since 3×42452545³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

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, 15234 + ... + 17803.

It is an arithmetic number, because the mean of its divisors is an integer number (6392853).

Almost surely, 2^42452545 is an apocalyptic number.

It is an amenable number.

42452545 is a deficient number, since it is larger than the sum of its proper divisors (8690279).

42452545 is a wasteful number, since it uses less digits than its factorization.

42452545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33299.

The product of its digits is 32000, while the sum is 31.

The square root of 42452545 is about 6515.5617562878. The cubic root of 42452545 is about 348.8466662489.

Adding to 42452545 its reverse (54525424), we get a palindrome (96977969).

The spelling of 42452545 in words is "forty-two million, four hundred fifty-two thousand, five hundred forty-five".