42070256 has 20 divisors (see below), whose sum is σ = 85801800. Its totient is φ = 19927872.

The previous prime is 42070253. The next prime is 42070267. The reversal of 42070256 is 65207024.

42070256 = T₂₄ + T₂₅ + ... + T₆₃₁.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42070253) 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, 68891 + ... + 69498.

It is an arithmetic number, because the mean of its divisors is an integer number (4290090).

Almost surely, 2^42070256 is an apocalyptic number.

It is an amenable number.

42070256 is an abundant number, since it is smaller than the sum of its proper divisors (43731544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42070256 is a wasteful number, since it uses less digits than its factorization.

42070256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138416 (or 138410 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 42070256 is about 6486.1588016329. The cubic root of 42070256 is about 347.7963753498.

The spelling of 42070256 in words is "forty-two million, seventy thousand, two hundred fifty-six".