40240641 has 16 divisors (see below), whose sum is σ = 62060544. Its totient is φ = 22716624.

The previous prime is 40240637. The next prime is 40240657. The reversal of 40240641 is 14604204.

It is not a de Polignac number, because 40240641 - 2² = 40240637 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (40240631) 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, 9801 + ... + 13286.

It is an arithmetic number, because the mean of its divisors is an integer number (3878784).

Almost surely, 2^40240641 is an apocalyptic number.

It is an amenable number.

40240641 is a deficient number, since it is larger than the sum of its proper divisors (21819903).

40240641 is a wasteful number, since it uses less digits than its factorization.

40240641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23180.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 40240641 is about 6343.5511348140. The cubic root of 40240641 is about 342.6796358187.

Adding to 40240641 its reverse (14604204), we get a palindrome (54844845).

The spelling of 40240641 in words is "forty million, two hundred forty thousand, six hundred forty-one".