42630907 has 4 divisors (see below), whose sum is σ = 46506456. Its totient is φ = 38755360.

The previous prime is 42630901. The next prime is 42630949. The reversal of 42630907 is 70903624.

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 42630907 - 2⁷ = 42630779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42630901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1937758 + ... + 1937779.

It is an arithmetic number, because the mean of its divisors is an integer number (11626614).

Almost surely, 2^42630907 is an apocalyptic number.

42630907 is a deficient number, since it is larger than the sum of its proper divisors (3875549).

42630907 is a wasteful number, since it uses less digits than its factorization.

42630907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3875548.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 42630907 is about 6529.2347943691. The cubic root of 42630907 is about 349.3345369020.

The spelling of 42630907 in words is "forty-two million, six hundred thirty thousand, nine hundred seven".