39142501 has 2 divisors, whose sum is σ = 39142502. Its totient is φ = 39142500.

The previous prime is 39142487. The next prime is 39142511. The reversal of 39142501 is 10524193.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38750625 + 391876 = 6225^2 + 626^2 .

It is a cyclic number.

It is not a de Polignac number, because 39142501 - 2⁹ = 39141989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39142511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19571250 + 19571251.

It is an arithmetic number, because the mean of its divisors is an integer number (19571251).

Almost surely, 2^39142501 is an apocalyptic number.

It is an amenable number.

39142501 is a deficient number, since it is larger than the sum of its proper divisors (1).

39142501 is an equidigital number, since it uses as much as digits as its factorization.

39142501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 39142501 is about 6256.3968064694. The cubic root of 39142501 is about 339.5336773225.

Adding to 39142501 its reverse (10524193), we get a palindrome (49666694).

The spelling of 39142501 in words is "thirty-nine million, one hundred forty-two thousand, five hundred one".