42130637 has 4 divisors (see below), whose sum is σ = 42144480. Its totient is φ = 42116796.

The previous prime is 42130631. The next prime is 42130691. The reversal of 42130637 is 73603124.

42130637 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 42130637 - 2⁸ = 42130381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42130631) 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, 143 + ... + 9180.

It is an arithmetic number, because the mean of its divisors is an integer number (10536120).

Almost surely, 2^42130637 is an apocalyptic number.

It is an amenable number.

42130637 is a deficient number, since it is larger than the sum of its proper divisors (13843).

42130637 is an equidigital number, since it uses as much as digits as its factorization.

42130637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13842.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 42130637 is about 6490.8117366012. The cubic root of 42130637 is about 347.9626864692.

The spelling of 42130637 in words is "forty-two million, one hundred thirty thousand, six hundred thirty-seven".