42556028 has 12 divisors (see below), whose sum is σ = 74967312. Its totient is φ = 21136800.

The previous prime is 42556001. The next prime is 42556037. The reversal of 42556028 is 82065524.

42556028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×42556028² = 3622031038273568, which contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 42555985 and 42556003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34625 + ... + 35832.

It is an arithmetic number, because the mean of its divisors is an integer number (6247276).

Almost surely, 2^42556028 is an apocalyptic number.

It is an amenable number.

42556028 is a deficient number, since it is larger than the sum of its proper divisors (32411284).

42556028 is a wasteful number, since it uses less digits than its factorization.

42556028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70612 (or 70610 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 42556028 is about 6523.4981413349. The cubic root of 42556028 is about 349.1298876421.

The spelling of 42556028 in words is "forty-two million, five hundred fifty-six thousand, twenty-eight".