4042121045 has 8 divisors (see below), whose sum is σ = 4963348896. Its totient is φ = 3158494416.

The previous prime is 4042121023. The next prime is 4042121087. The reversal of 4042121045 is 5401212404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4042121045 - 2¹⁶ = 4042055509 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4042121045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9400067 + ... + 9400496.

It is an arithmetic number, because the mean of its divisors is an integer number (620418612).

Almost surely, 2^4042121045 is an apocalyptic number.

It is an amenable number.

4042121045 is a deficient number, since it is larger than the sum of its proper divisors (921227851).

4042121045 is a wasteful number, since it uses less digits than its factorization.

4042121045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18800611.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 4042121045 is about 63577.6772538916. The cubic root of 4042121045 is about 1592.9535236062.

Adding to 4042121045 its reverse (5401212404), we get a palindrome (9443333449).

The spelling of 4042121045 in words is "four billion, forty-two million, one hundred twenty-one thousand, forty-five".