42555700 has 54 divisors (see below), whose sum is σ = 101532998. Its totient is φ = 15470400.

The previous prime is 42555659. The next prime is 42555701. The reversal of 42555700 is 755524.

It can be written as a sum of positive squares in 3 ways, for example, as 11329956 + 31225744 = 3366^2 + 5588^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42555701) 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 17 ways as a sum of consecutive naturals, for example, 10342 + ... + 13858.

Almost surely, 2^42555700 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42555700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50766499).

42555700 is an abundant number, since it is smaller than the sum of its proper divisors (58977298).

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

42555700 is a wasteful number, since it uses less digits than its factorization.

42555700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3553 (or 3535 counting only the distinct ones).

The product of its (nonzero) digits is 7000, while the sum is 28.

The square root of 42555700 is about 6523.4730014004. The cubic root of 42555700 is about 349.1289906685.

The spelling of 42555700 in words is "forty-two million, five hundred fifty-five thousand, seven hundred".