42552371 has 2 divisors, whose sum is σ = 42552372. Its totient is φ = 42552370.

The previous prime is 42552347. The next prime is 42552379. The reversal of 42552371 is 17325524.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42552371 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42552379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21276185 + 21276186.

It is an arithmetic number, because the mean of its divisors is an integer number (21276186).

Almost surely, 2^42552371 is an apocalyptic number.

42552371 is a deficient number, since it is larger than the sum of its proper divisors (1).

42552371 is an equidigital number, since it uses as much as digits as its factorization.

42552371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8400, while the sum is 29.

The square root of 42552371 is about 6523.2178409126. The cubic root of 42552371 is about 349.1198866729.

Adding to 42552371 its reverse (17325524), we get a palindrome (59877895).

The spelling of 42552371 in words is "forty-two million, five hundred fifty-two thousand, three hundred seventy-one".