40071061 has 2 divisors, whose sum is σ = 40071062. Its totient is φ = 40071060.

The previous prime is 40071049. The next prime is 40071071. The reversal of 40071061 is 16017004.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39250225 + 820836 = 6265^2 + 906^2 .

It is a cyclic number.

It is not a de Polignac number, because 40071061 - 2⁵ = 40071029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40071041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20035530 + 20035531.

It is an arithmetic number, because the mean of its divisors is an integer number (20035531).

Almost surely, 2^40071061 is an apocalyptic number.

It is an amenable number.

40071061 is a deficient number, since it is larger than the sum of its proper divisors (1).

40071061 is an equidigital number, since it uses as much as digits as its factorization.

40071061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 40071061 is about 6330.1706928013. The cubic root of 40071061 is about 342.1975905269.

Adding to 40071061 its reverse (16017004), we get a palindrome (56088065).

The spelling of 40071061 in words is "forty million, seventy-one thousand, sixty-one".