2015042149 has 4 divisors (see below), whose sum is σ = 2015549536. Its totient is φ = 2014534764.

The previous prime is 2015042101. The next prime is 2015042153. The reversal of 2015042149 is 9412405102.

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 a de Polignac number, because none of the positive numbers 2^k-2015042149 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 (2015042189) 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, 247689 + ... + 255694.

It is an arithmetic number, because the mean of its divisors is an integer number (503887384).

Almost surely, 2^2015042149 is an apocalyptic number.

It is an amenable number.

2015042149 is a deficient number, since it is larger than the sum of its proper divisors (507387).

2015042149 is an equidigital number, since it uses as much as digits as its factorization.

2015042149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507386.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 2015042149 is about 44889.2208553457. The cubic root of 2015042149 is about 1263.0718173554.

The spelling of 2015042149 in words is "two billion, fifteen million, forty-two thousand, one hundred forty-nine".