42020427 has 8 divisors (see below), whose sum is σ = 56816640. Its totient is φ = 27618920.

The previous prime is 42020393. The next prime is 42020437. The reversal of 42020427 is 72402024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42020427 - 2⁸ = 42020171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42020437) 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 7 ways as a sum of consecutive naturals, for example, 98427 + ... + 98852.

It is an arithmetic number, because the mean of its divisors is an integer number (7102080).

Almost surely, 2^42020427 is an apocalyptic number.

42020427 is a deficient number, since it is larger than the sum of its proper divisors (14796213).

42020427 is a wasteful number, since it uses less digits than its factorization.

42020427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197353.

The product of its (nonzero) digits is 896, while the sum is 21.

The square root of 42020427 is about 6482.3164840973. The cubic root of 42020427 is about 347.6590083681.

The spelling of 42020427 in words is "forty-two million, twenty thousand, four hundred twenty-seven".