39740123 has 2 divisors, whose sum is σ = 39740124. Its totient is φ = 39740122.

The previous prime is 39740119. The next prime is 39740137. The reversal of 39740123 is 32104793.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 39740123 - 2² = 39740119 is a prime.

It is not a weakly prime, because it can be changed into another prime (39740143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19870061 + 19870062.

It is an arithmetic number, because the mean of its divisors is an integer number (19870062).

Almost surely, 2^39740123 is an apocalyptic number.

39740123 is a deficient number, since it is larger than the sum of its proper divisors (1).

39740123 is an equidigital number, since it uses as much as digits as its factorization.

39740123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 39740123 is about 6303.9767607440. The cubic root of 39740123 is about 341.2529405302.

The spelling of 39740123 in words is "thirty-nine million, seven hundred forty thousand, one hundred twenty-three".