42671237 has 4 divisors (see below), whose sum is σ = 48767136. Its totient is φ = 36575340.

The previous prime is 42671227. The next prime is 42671243. The reversal of 42671237 is 73217624.

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.

It is a cyclic number.

It is not a de Polignac number, because 42671237 - 2²⁰ = 41622661 is a prime.

It is a super-2 number, since 2×42671237² = 3641668934220338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42671227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3047939 + ... + 3047952.

It is an arithmetic number, because the mean of its divisors is an integer number (12191784).

Almost surely, 2^42671237 is an apocalyptic number.

It is an amenable number.

42671237 is a deficient number, since it is larger than the sum of its proper divisors (6095899).

42671237 is an equidigital number, since it uses as much as digits as its factorization.

42671237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6095898.

The product of its digits is 14112, while the sum is 32.

The square root of 42671237 is about 6532.3224813232. The cubic root of 42671237 is about 349.4446621800. Note that the first 3 decimals are identical.

The spelling of 42671237 in words is "forty-two million, six hundred seventy-one thousand, two hundred thirty-seven".