42630001 has 4 divisors (see below), whose sum is σ = 42752500. Its totient is φ = 42507504.

The previous prime is 42629989. The next prime is 42630011. The reversal of 42630001 is 10003624.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24990001 + 17640000 = 4999^2 + 4200^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42630001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42630011) 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, 60726 + ... + 61423.

It is an arithmetic number, because the mean of its divisors is an integer number (10688125).

Almost surely, 2^42630001 is an apocalyptic number.

It is an amenable number.

42630001 is a deficient number, since it is larger than the sum of its proper divisors (122499).

42630001 is a wasteful number, since it uses less digits than its factorization.

42630001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122498.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 42630001 is about 6529.1654137416. The cubic root of 42630001 is about 349.3320621769.

Adding to 42630001 its reverse (10003624), we get a palindrome (52633625).

The spelling of 42630001 in words is "forty-two million, six hundred thirty thousand, one".