42890527 has 4 divisors (see below), whose sum is σ = 42921616. Its totient is φ = 42859440.

The previous prime is 42890521. The next prime is 42890531. The reversal of 42890527 is 72509824.

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 42890527 - 2⁷ = 42890399 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 (42890521) 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, 13374 + ... + 16267.

It is an arithmetic number, because the mean of its divisors is an integer number (10730404).

Almost surely, 2^42890527 is an apocalyptic number.

42890527 is a deficient number, since it is larger than the sum of its proper divisors (31089).

42890527 is a wasteful number, since it uses less digits than its factorization.

42890527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31088.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 42890527 is about 6549.0859667590. The cubic root of 42890527 is about 350.0422452409.

The spelling of 42890527 in words is "forty-two million, eight hundred ninety thousand, five hundred twenty-seven".