2142378849 has 8 divisors (see below), whose sum is σ = 3076236352. Its totient is φ = 1318386960.

The previous prime is 2142378841. The next prime is 2142378853. The reversal of 2142378849 is 9488732412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2142378849 - 2³ = 2142378841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2142378798 and 2142378807.

It is not an unprimeable number, because it can be changed into a prime (2142378841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27466357 + ... + 27466434.

It is an arithmetic number, because the mean of its divisors is an integer number (384529544).

Almost surely, 2^2142378849 is an apocalyptic number.

It is an amenable number.

2142378849 is a deficient number, since it is larger than the sum of its proper divisors (933857503).

2142378849 is a wasteful number, since it uses less digits than its factorization.

2142378849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54932807.

The product of its digits is 774144, while the sum is 48.

The square root of 2142378849 is about 46285.8385362089. The cubic root of 2142378849 is about 1289.1360617588.

The spelling of 2142378849 in words is "two billion, one hundred forty-two million, three hundred seventy-eight thousand, eight hundred forty-nine".