39542149 has 4 divisors (see below), whose sum is σ = 39559360. Its totient is φ = 39524940.

The previous prime is 39542131. The next prime is 39542161. The reversal of 39542149 is 94124593.

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 a cyclic number.

It is not a de Polignac number, because 39542149 - 2¹¹ = 39540101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39542179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4509 + ... + 9970.

It is an arithmetic number, because the mean of its divisors is an integer number (9889840).

Almost surely, 2^39542149 is an apocalyptic number.

It is an amenable number.

39542149 is a deficient number, since it is larger than the sum of its proper divisors (17211).

39542149 is a wasteful number, since it uses less digits than its factorization.

39542149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17210.

The product of its digits is 38880, while the sum is 37.

The square root of 39542149 is about 6288.2548453446. The cubic root of 39542149 is about 340.6853218534.

The spelling of 39542149 in words is "thirty-nine million, five hundred forty-two thousand, one hundred forty-nine".