40134641 has 2 divisors, whose sum is σ = 40134642. Its totient is φ = 40134640.

The previous prime is 40134629. The next prime is 40134643. The reversal of 40134641 is 14643104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40056241 + 78400 = 6329^2 + 280^2 .

It is a cyclic number.

It is not a de Polignac number, because 40134641 - 2¹⁴ = 40118257 is a prime.

It is a super-2 number, since 2×40134641² = 3221578816397762, which contains 22 as substring.

Together with 40134643, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40134643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20067320 + 20067321.

It is an arithmetic number, because the mean of its divisors is an integer number (20067321).

Almost surely, 2^40134641 is an apocalyptic number.

It is an amenable number.

40134641 is a deficient number, since it is larger than the sum of its proper divisors (1).

40134641 is an equidigital number, since it uses as much as digits as its factorization.

40134641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 40134641 is about 6335.1906837916. The cubic root of 40134641 is about 342.3784810524.

Adding to 40134641 its reverse (14643104), we get a palindrome (54777745).

The spelling of 40134641 in words is "forty million, one hundred thirty-four thousand, six hundred forty-one".