2104421042 has 4 divisors (see below), whose sum is σ = 3156631566. Its totient is φ = 1052210520.

The previous prime is 2104421017. The next prime is 2104421069. The reversal of 2104421042 is 2401244012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1413835201 + 690585841 = 37601^2 + 26279^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 526105259 + ... + 526105262.

Almost surely, 2^2104421042 is an apocalyptic number.

2104421042 is a deficient number, since it is larger than the sum of its proper divisors (1052210524).

2104421042 is a wasteful number, since it uses less digits than its factorization.

2104421042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052210523.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 2104421042 is about 45873.9691110329. The cubic root of 2104421042 is about 1281.4771849786.

Adding to 2104421042 its reverse (2401244012), we get a palindrome (4505665054).

The spelling of 2104421042 in words is "two billion, one hundred four million, four hundred twenty-one thousand, forty-two".