42120132044121 has 32 divisors (see below), whose sum is σ = 64552706928000. Its totient is φ = 27111481354944.

The previous prime is 42120132044077. The next prime is 42120132044129. The reversal of 42120132044121 is 12144023102124.

42120132044121 is a `hidden beast` number, since 4 + 21 + 20 + 1 + 3 + 204 + 412 + 1 = 666.

It is not a de Polignac number, because 42120132044121 - 2¹⁸ = 42120131781977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42120132044129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75877251 + ... + 76430343.

It is an arithmetic number, because the mean of its divisors is an integer number (2017272091500).

Almost surely, 2^{42120132044121} is an apocalyptic number.

It is an amenable number.

42120132044121 is a deficient number, since it is larger than the sum of its proper divisors (22432574883879).

42120132044121 is a wasteful number, since it uses less digits than its factorization.

42120132044121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650390 (or 650384 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 42120132044121 its reverse (12144023102124), we get a palindrome (54264155146245).

The spelling of 42120132044121 in words is "forty-two trillion, one hundred twenty billion, one hundred thirty-two million, forty-four thousand, one hundred twenty-one".