42305556 has 24 divisors (see below), whose sum is σ = 103005504. Its totient is φ = 13488640.

The previous prime is 42305551. The next prime is 42305569. The reversal of 42305556 is 65550324.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42305551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76365 + ... + 76916.

It is an arithmetic number, because the mean of its divisors is an integer number (4291896).

Almost surely, 2^42305556 is an apocalyptic number.

42305556 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

42305556 is an abundant number, since it is smaller than the sum of its proper divisors (60699948).

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

42305556 is a wasteful number, since it uses less digits than its factorization.

42305556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153311 (or 153309 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 42305556 is about 6504.2721345282. The cubic root of 42305556 is about 348.4435815236.

The spelling of 42305556 in words is "forty-two million, three hundred five thousand, five hundred fifty-six".