41840145 has 80 divisors (see below), whose sum is σ = 81544320. Its totient is φ = 20445696.

The previous prime is 41840143. The next prime is 41840167. The reversal of 41840145 is 54104814.

It is a happy number.

It is not a de Polignac number, because 41840145 - 2¹ = 41840143 is a prime.

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 (41840143) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 406164 + ... + 406266.

It is an arithmetic number, because the mean of its divisors is an integer number (1019304).

Almost surely, 2^41840145 is an apocalyptic number.

41840145 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

41840145 is a deficient number, since it is larger than the sum of its proper divisors (39704175).

41840145 is a wasteful number, since it uses less digits than its factorization.

41840145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 41840145 is about 6468.3958598713. The cubic root of 41840145 is about 347.1611036199.

Adding to 41840145 its reverse (54104814), we get a palindrome (95944959).

The spelling of 41840145 in words is "forty-one million, eight hundred forty thousand, one hundred forty-five".