42155300 has 72 divisors (see below), whose sum is σ = 105097440. Its totient is φ = 14515200.

The previous prime is 42155293. The next prime is 42155317. The reversal of 42155300 is 355124.

It is a Harshad number since it is a multiple of its sum of digits (20).

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 23 ways as a sum of consecutive naturals, for example, 19892 + ... + 21908.

Almost surely, 2^42155300 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 42155300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52548720).

42155300 is an abundant number, since it is smaller than the sum of its proper divisors (62942140).

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

42155300 is a wasteful number, since it uses less digits than its factorization.

42155300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2061 (or 2054 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 42155300 is about 6492.7112980634. The cubic root of 42155300 is about 348.0305715865.

The spelling of 42155300 in words is "forty-two million, one hundred fifty-five thousand, three hundred".