42554321 has 2 divisors, whose sum is σ = 42554322. Its totient is φ = 42554320.

The previous prime is 42554311. The next prime is 42554333. The reversal of 42554321 is 12345524.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24364096 + 18190225 = 4936^2 + 4265^2 .

It is a cyclic number.

It is not a de Polignac number, because 42554321 - 2⁶ = 42554257 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (42554311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21277160 + 21277161.

It is an arithmetic number, because the mean of its divisors is an integer number (21277161).

Almost surely, 2^42554321 is an apocalyptic number.

It is an amenable number.

42554321 is a deficient number, since it is larger than the sum of its proper divisors (1).

42554321 is an equidigital number, since it uses as much as digits as its factorization.

42554321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4800, while the sum is 26.

The square root of 42554321 is about 6523.3673053110. The cubic root of 42554321 is about 349.1252195005.

Adding to 42554321 its reverse (12345524), we get a palindrome (54899845).

It can be divided in two parts, 42554 and 321, that added together give a cube (42875 = 35³).

The spelling of 42554321 in words is "forty-two million, five hundred fifty-four thousand, three hundred twenty-one".