42554201121 has 16 divisors (see below), whose sum is σ = 63046437120. Its totient is φ = 28368038160.

The previous prime is 42554201101. The next prime is 42554201141. The reversal of 42554201121 is 12110245524.

It is a happy number.

42554201121 is a `hidden beast` number, since 4 + 2 + 5 + 542 + 0 + 112 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (42554201101) and next prime (42554201141).

It is not a de Polignac number, because 42554201121 - 2⁵ = 42554201089 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (42554201101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1040856 + ... + 1080966.

It is an arithmetic number, because the mean of its divisors is an integer number (3940402320).

Almost surely, 2^42554201121 is an apocalyptic number.

It is an amenable number.

42554201121 is a deficient number, since it is larger than the sum of its proper divisors (20492235999).

42554201121 is a wasteful number, since it uses less digits than its factorization.

42554201121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79413 (or 79407 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 42554201121 its reverse (12110245524), we get a palindrome (54664446645).

The spelling of 42554201121 in words is "forty-two billion, five hundred fifty-four million, two hundred one thousand, one hundred twenty-one".