42270787 has 6 divisors (see below), whose sum is σ = 45772692. Its totient is φ = 39019032.

The previous prime is 42270779. The next prime is 42270793. The reversal of 42270787 is 78707224.

It is not a de Polignac number, because 42270787 - 2³ = 42270779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42270707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 124893 + ... + 125230.

It is an arithmetic number, because the mean of its divisors is an integer number (7628782).

Almost surely, 2^42270787 is an apocalyptic number.

42270787 is a deficient number, since it is larger than the sum of its proper divisors (3501905).

42270787 is a wasteful number, since it uses less digits than its factorization.

42270787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250149 (or 250136 counting only the distinct ones).

The product of its (nonzero) digits is 43904, while the sum is 37.

The square root of 42270787 is about 6501.5988033714. The cubic root of 42270787 is about 348.3480987512.

The spelling of 42270787 in words is "forty-two million, two hundred seventy thousand, seven hundred eighty-seven".