4202105042 has 4 divisors (see below), whose sum is σ = 6303157566. Its totient is φ = 2101052520.

The previous prime is 4202105027. The next prime is 4202105051. The reversal of 4202105042 is 2405012024.

It is a happy number.

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., 2712222241 + 1489882801 = 52079^2 + 38599^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050526259 + ... + 1050526262.

Almost surely, 2^4202105042 is an apocalyptic number.

4202105042 is a deficient number, since it is larger than the sum of its proper divisors (2101052524).

4202105042 is a wasteful number, since it uses less digits than its factorization.

4202105042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2101052523.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 4202105042 is about 64823.6457012408. The cubic root of 4202105042 is about 1613.6981514060.

Adding to 4202105042 its reverse (2405012024), we get a palindrome (6607117066).

The spelling of 4202105042 in words is "four billion, two hundred two million, one hundred five thousand, forty-two".