16042500 has 180 divisors, whose sum is σ = 54582528. Its totient is φ = 3960000.

The previous prime is 16042471. The next prime is 16042501. The reversal of 16042500 is 524061.

It is a happy number.

16042500 is a `hidden beast` number, since 160 + 4 + 2 + 500 = 666.

It is a tau number, because it is divible by the number of its divisors (180).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (16042501) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 517485 + ... + 517515.

Almost surely, 2^16042500 is an apocalyptic number.

16042500 is a gapful number since it is divisible by the number (10) 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 16042500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27291264).

16042500 is an abundant number, since it is smaller than the sum of its proper divisors (38540028).

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

16042500 is a wasteful number, since it uses less digits than its factorization.

16042500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 16042500 is about 4005.3089768456. The cubic root of 16042500 is about 252.2071237430.

Adding to 16042500 its reverse (524061), we get a palindrome (16566561).

The spelling of 16042500 in words is "sixteen million, forty-two thousand, five hundred".