2103421042 has 4 divisors (see below), whose sum is σ = 3155131566. Its totient is φ = 1051710520.

The previous prime is 2103421037. The next prime is 2103421081. The reversal of 2103421042 is 2401243012.

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., 2073071961 + 30349081 = 45531^2 + 5509^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525855259 + ... + 525855262.

Almost surely, 2^2103421042 is an apocalyptic number.

2103421042 is a deficient number, since it is larger than the sum of its proper divisors (1051710524).

2103421042 is a wasteful number, since it uses less digits than its factorization.

2103421042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051710523.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2103421042 is about 45863.0683884103. The cubic root of 2103421042 is about 1281.2741710705.

Adding to 2103421042 its reverse (2401243012), we get a palindrome (4504664054).

The spelling of 2103421042 in words is "two billion, one hundred three million, four hundred twenty-one thousand, forty-two".