42549256 has 8 divisors (see below), whose sum is σ = 79779870. Its totient is φ = 21274624.

The previous prime is 42549253. The next prime is 42549257. The reversal of 42549256 is 65294524.

It can be written as a sum of positive squares in only one way, i.e., 33246756 + 9302500 = 5766^2 + 3050^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (42549253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2659321 + ... + 2659336.

Almost surely, 2^42549256 is an apocalyptic number.

It is an amenable number.

42549256 is a deficient number, since it is larger than the sum of its proper divisors (37230614).

42549256 is a wasteful number, since it uses less digits than its factorization.

42549256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5318663 (or 5318659 counting only the distinct ones).

The product of its digits is 86400, while the sum is 37.

The square root of 42549256 is about 6522.9790740121. The cubic root of 42549256 is about 349.1113674846. Note that the first 3 decimals are identical.

The spelling of 42549256 in words is "forty-two million, five hundred forty-nine thousand, two hundred fifty-six".