115143040 has 128 divisors (see below), whose sum is σ = 307346400. Its totient is φ = 40992768.

The previous prime is 115143031. The next prime is 115143073. The reversal of 115143040 is 40341511.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 115142999 and 115143017.

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 15 ways as a sum of consecutive naturals, for example, 206442 + ... + 206998.

Almost surely, 2^115143040 is an apocalyptic number.

115143040 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 115143040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153673200).

115143040 is an abundant number, since it is smaller than the sum of its proper divisors (192203360).

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

115143040 is a wasteful number, since it uses less digits than its factorization.

115143040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612 (or 600 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 115143040 is about 10730.4724965865. The cubic root of 115143040 is about 486.4959514653.

Adding to 115143040 its reverse (40341511), we get a palindrome (155484551).

The spelling of 115143040 in words is "one hundred fifteen million, one hundred forty-three thousand, forty".