42157583 has 4 divisors (see below), whose sum is σ = 45400488. Its totient is φ = 38914680.

The previous prime is 42157571. The next prime is 42157607. The reversal of 42157583 is 38575124.

It is a happy number.

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 42157583 - 2⁶ = 42157519 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 (42157783) 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, 1621433 + ... + 1621458.

It is an arithmetic number, because the mean of its divisors is an integer number (11350122).

Almost surely, 2^42157583 is an apocalyptic number.

42157583 is a deficient number, since it is larger than the sum of its proper divisors (3242905).

42157583 is a wasteful number, since it uses less digits than its factorization.

42157583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3242904.

The product of its digits is 33600, while the sum is 35.

The square root of 42157583 is about 6492.8871082131. The cubic root of 42157583 is about 348.0368542243.

The spelling of 42157583 in words is "forty-two million, one hundred fifty-seven thousand, five hundred eighty-three".