42660553 has 8 divisors (see below), whose sum is σ = 46524800. Its totient is φ = 38879568.

The previous prime is 42660539. The next prime is 42660559. The reversal of 42660553 is 35506624.

42660553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 42660553 - 2⁵ = 42660521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42660559) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 19743 + ... + 21796.

It is an arithmetic number, because the mean of its divisors is an integer number (5815600).

Almost surely, 2^42660553 is an apocalyptic number.

It is an amenable number.

42660553 is a deficient number, since it is larger than the sum of its proper divisors (3864247).

42660553 is a wasteful number, since it uses less digits than its factorization.

42660553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41631.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 42660553 is about 6531.5046505380. The cubic root of 42660553 is about 349.4154951605.

The spelling of 42660553 in words is "forty-two million, six hundred sixty thousand, five hundred fifty-three".