2142101042 has 4 divisors (see below), whose sum is σ = 3213151566. Its totient is φ = 1071050520.

The previous prime is 2142101011. The next prime is 2142101057. The reversal of 2142101042 is 2401012412.

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., 1686662761 + 455438281 = 41069^2 + 21341^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2142101042.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 535525259 + ... + 535525262.

Almost surely, 2^2142101042 is an apocalyptic number.

2142101042 is a deficient number, since it is larger than the sum of its proper divisors (1071050524).

2142101042 is a wasteful number, since it uses less digits than its factorization.

2142101042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071050523.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 2142101042 is about 46282.8374454289. The cubic root of 2142101042 is about 1289.0803376427.

Adding to 2142101042 its reverse (2401012412), we get a palindrome (4543113454).

The spelling of 2142101042 in words is "two billion, one hundred forty-two million, one hundred one thousand, forty-two".