43145136 has 100 divisors (see below), whose sum is σ = 126303672. Its totient is φ = 14276736.

The previous prime is 43145131. The next prime is 43145147. The reversal of 43145136 is 63154134.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (43145131) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 314860 + ... + 314996.

Almost surely, 2^43145136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43145136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63151836).

43145136 is an abundant number, since it is smaller than the sum of its proper divisors (83158536).

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

43145136 is an frugal number, since it uses more digits than its factorization.

43145136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 142 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 43145136 is about 6568.4957181991. The cubic root of 43145136 is about 350.7335255581.

The spelling of 43145136 in words is "forty-three million, one hundred forty-five thousand, one hundred thirty-six".