4042122401021 has 4 divisors (see below), whose sum is σ = 4072978297344. Its totient is φ = 4011266504700.

The previous prime is 4042122400951. The next prime is 4042122401027. The reversal of 4042122401021 is 1201042212404.

4042122401021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4042122401021 - 2¹⁴ = 4042122384637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4042122401027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15427947965 + ... + 15427948226.

It is an arithmetic number, because the mean of its divisors is an integer number (1018244574336).

Almost surely, 2^{4042122401021} is an apocalyptic number.

It is an amenable number.

4042122401021 is a deficient number, since it is larger than the sum of its proper divisors (30855896323).

4042122401021 is a wasteful number, since it uses less digits than its factorization.

4042122401021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30855896322.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 4042122401021 its reverse (1201042212404), we get a palindrome (5243164613425).

The spelling of 4042122401021 in words is "four trillion, forty-two billion, one hundred twenty-two million, four hundred one thousand, twenty-one".