42501111000 has 128 divisors (see below), whose sum is σ = 134420644800. Its totient is φ = 11178316800.

The previous prime is 42501110989. The next prime is 42501111017. The reversal of 42501111000 is 11110524.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121966 + ... + 316034.

Almost surely, 2^42501111000 is an apocalyptic number.

42501111000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42501111000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67210322400).

42501111000 is an abundant number, since it is smaller than the sum of its proper divisors (91919533800).

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

42501111000 is a wasteful number, since it uses less digits than its factorization.

42501111000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194166 (or 194152 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 15.

Adding to 42501111000 its reverse (11110524), we get a palindrome (42512221524).

The spelling of 42501111000 in words is "forty-two billion, five hundred one million, one hundred eleven thousand".