115421500 has 96 divisors (see below), whose sum is σ = 274869504. Its totient is φ = 42163200.

The previous prime is 115421473. The next prime is 115421539. The reversal of 115421500 is 5124511.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 314317 + ... + 314683.

It is an arithmetic number, because the mean of its divisors is an integer number (2863224).

Almost surely, 2^115421500 is an apocalyptic number.

115421500 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 115421500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137434752).

115421500 is an abundant number, since it is smaller than the sum of its proper divisors (159448004).

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

115421500 is a wasteful number, since it uses less digits than its factorization.

115421500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440 (or 428 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 115421500 is about 10743.4398588162. The cubic root of 115421500 is about 486.8878136316.

It can be divided in two parts, 115421 and 500, that added together give a triangular number (115921 = T₄₈₁).

The spelling of 115421500 in words is "one hundred fifteen million, four hundred twenty-one thousand, five hundred".