40204141 has 2 divisors, whose sum is σ = 40204142. Its totient is φ = 40204140.

The previous prime is 40204139. The next prime is 40204147. The reversal of 40204141 is 14140204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36650916 + 3553225 = 6054^2 + 1885^2 .

It is a cyclic number.

It is not a de Polignac number, because 40204141 - 2¹ = 40204139 is a prime.

Together with 40204139, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40204147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20102070 + 20102071.

It is an arithmetic number, because the mean of its divisors is an integer number (20102071).

Almost surely, 2^40204141 is an apocalyptic number.

It is an amenable number.

40204141 is a deficient number, since it is larger than the sum of its proper divisors (1).

40204141 is an equidigital number, since it uses as much as digits as its factorization.

40204141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 40204141 is about 6340.6735446638. The cubic root of 40204141 is about 342.5759960654.

Adding to 40204141 its reverse (14140204), we get a palindrome (54344345).

The spelling of 40204141 in words is "forty million, two hundred four thousand, one hundred forty-one".