42732545 has 8 divisors (see below), whose sum is σ = 51504360. Its totient is φ = 34035840.

The previous prime is 42732527. The next prime is 42732559. The reversal of 42732545 is 54523724.

It can be written as a sum of positive squares in 4 ways, for example, as 20539024 + 22193521 = 4532^2 + 4711^2 .

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

It is not a de Polignac number, because 42732545 - 2⁸ = 42732289 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17516 + ... + 19805.

It is an arithmetic number, because the mean of its divisors is an integer number (6438045).

Almost surely, 2^42732545 is an apocalyptic number.

It is an amenable number.

42732545 is a deficient number, since it is larger than the sum of its proper divisors (8771815).

42732545 is a wasteful number, since it uses less digits than its factorization.

42732545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37555.

The product of its digits is 33600, while the sum is 32.

The square root of 42732545 is about 6537.0134618188. The cubic root of 42732545 is about 349.6119372411.

The spelling of 42732545 in words is "forty-two million, seven hundred thirty-two thousand, five hundred forty-five".