43146240 has 132 divisors (see below), whose sum is σ = 140653464. Its totient is φ = 11288576.

The previous prime is 43146223. The next prime is 43146247. The reversal of 43146240 is 4264134.

It is a super-2 number, since 2×43146240² = 3723196052275200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 43146240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43146247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 814054 + ... + 814106.

Almost surely, 2^43146240 is an apocalyptic number.

43146240 is a gapful number since it is divisible by the number (40) 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 43146240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70326732).

43146240 is an abundant number, since it is smaller than the sum of its proper divisors (97507224).

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

43146240 is an equidigital number, since it uses as much as digits as its factorization.

43146240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 63 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 43146240 is about 6568.5797551678. The cubic root of 43146240 is about 350.7365170618.

The spelling of 43146240 in words is "forty-three million, one hundred forty-six thousand, two hundred forty".