39140121 has 4 divisors (see below), whose sum is σ = 52186832. Its totient is φ = 26093412.

The previous prime is 39140113. The next prime is 39140131. The reversal of 39140121 is 12104193.

39140121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 39140121 - 2³ = 39140113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39140131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6523351 + ... + 6523356.

It is an arithmetic number, because the mean of its divisors is an integer number (13046708).

Almost surely, 2^39140121 is an apocalyptic number.

It is an amenable number.

39140121 is a deficient number, since it is larger than the sum of its proper divisors (13046711).

39140121 is a wasteful number, since it uses less digits than its factorization.

39140121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13046710.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 39140121 is about 6256.2065982511. The cubic root of 39140121 is about 339.5267955741.

The spelling of 39140121 in words is "thirty-nine million, one hundred forty thousand, one hundred twenty-one".