42660403 has 4 divisors (see below), whose sum is σ = 42781608. Its totient is φ = 42539200.

The previous prime is 42660323. The next prime is 42660407. The reversal of 42660403 is 30406624.

42660403 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 is a cyclic number.

It is not a de Polignac number, because 42660403 - 2²¹ = 40563251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42660407) 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 3 ways as a sum of consecutive naturals, for example, 60073 + ... + 60778.

It is an arithmetic number, because the mean of its divisors is an integer number (10695402).

Almost surely, 2^42660403 is an apocalyptic number.

42660403 is a deficient number, since it is larger than the sum of its proper divisors (121205).

42660403 is a wasteful number, since it uses less digits than its factorization.

42660403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121204.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 42660403 is about 6531.4931677221. The cubic root of 42660403 is about 349.4150856301.

The spelling of 42660403 in words is "forty-two million, six hundred sixty thousand, four hundred three".