42148637 has 4 divisors (see below), whose sum is σ = 42281916. Its totient is φ = 42015360.

The previous prime is 42148619. The next prime is 42148651. The reversal of 42148637 is 73684124.

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 9647236 + 32501401 = 3106^2 + 5701^2 .

It is a cyclic number.

It is not a de Polignac number, because 42148637 - 2⁶ = 42148573 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42148597 and 42148606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42148607) 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, 66164 + ... + 66797.

It is an arithmetic number, because the mean of its divisors is an integer number (10570479).

Almost surely, 2^42148637 is an apocalyptic number.

It is an amenable number.

42148637 is a deficient number, since it is larger than the sum of its proper divisors (133279).

42148637 is a wasteful number, since it uses less digits than its factorization.

42148637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133278.

The product of its digits is 32256, while the sum is 35.

The square root of 42148637 is about 6492.1981639503. The cubic root of 42148637 is about 348.0122342332.

The spelling of 42148637 in words is "forty-two million, one hundred forty-eight thousand, six hundred thirty-seven".