4042121052 has 12 divisors (see below), whose sum is σ = 9431615816. Its totient is φ = 1347373680.

The previous prime is 4042121023. The next prime is 4042121087. The reversal of 4042121052 is 2501212404.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168421699 + ... + 168421722.

Almost surely, 2^4042121052 is an apocalyptic number.

It is an amenable number.

4042121052 is an abundant number, since it is smaller than the sum of its proper divisors (5389494764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4042121052 is a wasteful number, since it uses less digits than its factorization.

4042121052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336843428 (or 336843426 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 4042121052 is about 63577.6773089423. The cubic root of 4042121052 is about 1592.9535245257.

Adding to 4042121052 its reverse (2501212404), we get a palindrome (6543333456).

The spelling of 4042121052 in words is "four billion, forty-two million, one hundred twenty-one thousand, fifty-two".