40120529 has 2 divisors, whose sum is σ = 40120530. Its totient is φ = 40120528.

The previous prime is 40120519. The next prime is 40120547. The reversal of 40120529 is 92502104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32547025 + 7573504 = 5705^2 + 2752^2 .

It is a cyclic number.

It is not a de Polignac number, because 40120529 - 2⁴ = 40120513 is a prime.

It is not a weakly prime, because it can be changed into another prime (40120519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20060264 + 20060265.

It is an arithmetic number, because the mean of its divisors is an integer number (20060265).

Almost surely, 2^40120529 is an apocalyptic number.

It is an amenable number.

40120529 is a deficient number, since it is larger than the sum of its proper divisors (1).

40120529 is an equidigital number, since it uses as much as digits as its factorization.

40120529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 40120529 is about 6334.0768072388. The cubic root of 40120529 is about 342.3383477128.

The spelling of 40120529 in words is "forty million, one hundred twenty thousand, five hundred twenty-nine".