43137090 has 64 divisors (see below), whose sum is σ = 115758720. Its totient is φ = 11430720.

The previous prime is 43137067. The next prime is 43137091. The reversal of 43137090 is 9073134.

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 (43137091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52785 + ... + 53595.

It is an arithmetic number, because the mean of its divisors is an integer number (1808730).

Almost surely, 2^43137090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43137090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57879360).

43137090 is an abundant number, since it is smaller than the sum of its proper divisors (72621630).

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

43137090 is a wasteful number, since it uses less digits than its factorization.

43137090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024 (or 1018 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 43137090 is about 6567.8832206427. The cubic root of 43137090 is about 350.7117218072.

The spelling of 43137090 in words is "forty-three million, one hundred thirty-seven thousand, ninety".