42380256 has 24 divisors (see below), whose sum is σ = 111248424. Its totient is φ = 14126720.

The previous prime is 42380249. The next prime is 42380257. The reversal of 42380256 is 65208324.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42380257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220635 + ... + 220826.

It is an arithmetic number, because the mean of its divisors is an integer number (4635351).

Almost surely, 2^42380256 is an apocalyptic number.

It is an amenable number.

42380256 is an abundant number, since it is smaller than the sum of its proper divisors (68868168).

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

42380256 is a wasteful number, since it uses less digits than its factorization.

42380256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441474 (or 441466 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 42380256 is about 6510.0119815558. The cubic root of 42380256 is about 348.6485461756.

The spelling of 42380256 in words is "forty-two million, three hundred eighty thousand, two hundred fifty-six".