40207061 has 2 divisors, whose sum is σ = 40207062. Its totient is φ = 40207060.

The previous prime is 40207051. The next prime is 40207117. The reversal of 40207061 is 16070204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30316036 + 9891025 = 5506^2 + 3145^2 .

It is a cyclic number.

It is not a de Polignac number, because 40207061 - 2⁶ = 40206997 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40207051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20103530 + 20103531.

It is an arithmetic number, because the mean of its divisors is an integer number (20103531).

Almost surely, 2^40207061 is an apocalyptic number.

It is an amenable number.

40207061 is a deficient number, since it is larger than the sum of its proper divisors (1).

40207061 is an equidigital number, since it uses as much as digits as its factorization.

40207061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 40207061 is about 6340.9037999326. The cubic root of 40207061 is about 342.5842895535.

Adding to 40207061 its reverse (16070204), we get a palindrome (56277265).

The spelling of 40207061 in words is "forty million, two hundred seven thousand, sixty-one".