42550003 has 4 divisors (see below), whose sum is σ = 42940480. Its totient is φ = 42159528.

The previous prime is 42549973. The next prime is 42550007. The reversal of 42550003 is 30005524.

It is a happy number.

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 42550003 - 2⁹ = 42549491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42550007) 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, 195075 + ... + 195292.

It is an arithmetic number, because the mean of its divisors is an integer number (10735120).

Almost surely, 2^42550003 is an apocalyptic number.

42550003 is a deficient number, since it is larger than the sum of its proper divisors (390477).

42550003 is a wasteful number, since it uses less digits than its factorization.

42550003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390476.

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 42550003 is about 6523.0363328744. The cubic root of 42550003 is about 349.1134104868.

Adding to 42550003 its reverse (30005524), we get a palindrome (72555527).

The spelling of 42550003 in words is "forty-two million, five hundred fifty thousand, three".