42011100 has 54 divisors (see below), whose sum is σ = 131684280. Its totient is φ = 11202720.

The previous prime is 42011093. The next prime is 42011119. The reversal of 42011100 is 111024.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 22440 + ... + 24239.

Almost surely, 2^42011100 is an apocalyptic number.

It is an amenable number.

42011100 is an abundant number, since it is smaller than the sum of its proper divisors (89673180).

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

42011100 is a wasteful number, since it uses less digits than its factorization.

42011100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46699 (or 46689 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 42011100 is about 6481.5970254251. The cubic root of 42011100 is about 347.6332839309.

Adding to 42011100 its reverse (111024), we get a palindrome (42122124).

The spelling of 42011100 in words is "forty-two million, eleven thousand, one hundred".