42531827 has 4 divisors (see below), whose sum is σ = 45803520. Its totient is φ = 39260136.

The previous prime is 42531809. The next prime is 42531887. The reversal of 42531827 is 72813524.

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 42531827 - 2⁶ = 42531763 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42531793 and 42531802.

It is not an unprimeable number, because it can be changed into a prime (42531887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1635827 + ... + 1635852.

It is an arithmetic number, because the mean of its divisors is an integer number (11450880).

Almost surely, 2^42531827 is an apocalyptic number.

42531827 is a deficient number, since it is larger than the sum of its proper divisors (3271693).

42531827 is a wasteful number, since it uses less digits than its factorization.

42531827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3271692.

The product of its digits is 13440, while the sum is 32.

The square root of 42531827 is about 6521.6429678418. The cubic root of 42531827 is about 349.0636933802.

The spelling of 42531827 in words is "forty-two million, five hundred thirty-one thousand, eight hundred twenty-seven".