42355170 has 128 divisors (see below), whose sum is σ = 132814080. Its totient is φ = 9469440.

The previous prime is 42355169. The next prime is 42355193. The reversal of 42355170 is 7155324.

It is a happy number.

42355170 is a `hidden beast` number, since 42 + 3 + 551 + 70 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 38062 + ... + 39158.

It is an arithmetic number, because the mean of its divisors is an integer number (1037610).

Almost surely, 2^42355170 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42355170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66407040).

42355170 is an abundant number, since it is smaller than the sum of its proper divisors (90458910).

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

42355170 is a wasteful number, since it uses less digits than its factorization.

42355170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1137 (or 1131 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 42355170 is about 6508.0849717870. The cubic root of 42355170 is about 348.5797411507.

The spelling of 42355170 in words is "forty-two million, three hundred fifty-five thousand, one hundred seventy".