42256071 has 24 divisors (see below), whose sum is σ = 71709456. Its totient is φ = 23639040.

The previous prime is 42256061. The next prime is 42256111. The reversal of 42256071 is 17065224.

42256071 = T₃₇₈ + T₃₇₉ + ... + T₆₇₄.

It is not a de Polignac number, because 42256071 - 2¹⁵ = 42223303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42256001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15130 + ... + 17703.

It is an arithmetic number, because the mean of its divisors is an integer number (2987894).

Almost surely, 2^42256071 is an apocalyptic number.

42256071 is a deficient number, since it is larger than the sum of its proper divisors (29453385).

42256071 is a wasteful number, since it uses less digits than its factorization.

42256071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32863 (or 32860 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 42256071 is about 6500.4669832251. The cubic root of 42256071 is about 348.3076698404.

It can be divided in two parts, 4225 and 6071, that added together give a triangular number (10296 = T₁₄₃).

The spelling of 42256071 in words is "forty-two million, two hundred fifty-six thousand, seventy-one".