39742453 has 2 divisors, whose sum is σ = 39742454. Its totient is φ = 39742452.

The previous prime is 39742399. The next prime is 39742501. The reversal of 39742453 is 35424793.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29354724 + 10387729 = 5418^2 + 3223^2 .

It is a cyclic number.

It is not a de Polignac number, because 39742453 - 2⁹ = 39741941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39742253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19871226 + 19871227.

It is an arithmetic number, because the mean of its divisors is an integer number (19871227).

Almost surely, 2^39742453 is an apocalyptic number.

It is an amenable number.

39742453 is a deficient number, since it is larger than the sum of its proper divisors (1).

39742453 is an equidigital number, since it uses as much as digits as its factorization.

39742453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 37.

The square root of 39742453 is about 6304.1615620160. The cubic root of 39742453 is about 341.2596097246.

The spelling of 39742453 in words is "thirty-nine million, seven hundred forty-two thousand, four hundred fifty-three".