42026557 has 4 divisors (see below), whose sum is σ = 42103936. Its totient is φ = 41949180.

The previous prime is 42026549. The next prime is 42026573. The reversal of 42026557 is 75562024.

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 42026557 - 2³ = 42026549 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 (42026527) 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, 37869 + ... + 38962.

It is an arithmetic number, because the mean of its divisors is an integer number (10525984).

Almost surely, 2^42026557 is an apocalyptic number.

It is an amenable number.

42026557 is a deficient number, since it is larger than the sum of its proper divisors (77379).

42026557 is an equidigital number, since it uses as much as digits as its factorization.

42026557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77378.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 42026557 is about 6482.7892916553. The cubic root of 42026557 is about 347.6759132106.

The spelling of 42026557 in words is "forty-two million, twenty-six thousand, five hundred fifty-seven".