113145040 has 80 divisors (see below), whose sum is σ = 278125056. Its totient is φ = 42739200.

The previous prime is 113145017. The next prime is 113145041. The reversal of 113145040 is 40541311.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 113144999 and 113145017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113145041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106110 + ... + 107170.

Almost surely, 2^113145040 is an apocalyptic number.

113145040 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 113145040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139062528).

113145040 is an abundant number, since it is smaller than the sum of its proper divisors (164980016).

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

113145040 is a wasteful number, since it uses less digits than its factorization.

113145040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148 (or 1142 counting only the distinct ones).

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

The square root of 113145040 is about 10636.9657327642. The cubic root of 113145040 is about 483.6655704887.

Adding to 113145040 its reverse (40541311), we get a palindrome (153686351).

The spelling of 113145040 in words is "one hundred thirteen million, one hundred forty-five thousand, forty".