42827557 has 4 divisors (see below), whose sum is σ = 42857920. Its totient is φ = 42797196.

The previous prime is 42827549. The next prime is 42827563. The reversal of 42827557 is 75572824.

It is a happy number.

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 42827557 - 2³ = 42827549 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 (42822557) 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, 12957 + ... + 15922.

It is an arithmetic number, because the mean of its divisors is an integer number (10714480).

Almost surely, 2^42827557 is an apocalyptic number.

It is an amenable number.

42827557 is a deficient number, since it is larger than the sum of its proper divisors (30363).

42827557 is a wasteful number, since it uses less digits than its factorization.

42827557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30362.

The product of its digits is 156800, while the sum is 40.

The square root of 42827557 is about 6544.2766597998. The cubic root of 42827557 is about 349.8708557551.

The spelling of 42827557 in words is "forty-two million, eight hundred twenty-seven thousand, five hundred fifty-seven".