42132555 has 32 divisors (see below), whose sum is σ = 75846720. Its totient is φ = 22464864.

The previous prime is 42132553. The next prime is 42132577. The reversal of 42132555 is 55523124.

It is a happy number.

It is not a de Polignac number, because 42132555 - 2¹ = 42132553 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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 (42132553) 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 in 31 ways as a sum of consecutive naturals, for example, 9009 + ... + 12861.

It is an arithmetic number, because the mean of its divisors is an integer number (2370210).

Almost surely, 2^42132555 is an apocalyptic number.

42132555 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42132555 is a deficient number, since it is larger than the sum of its proper divisors (33714165).

42132555 is an frugal number, since it uses more digits than its factorization.

42132555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3879 (or 3861 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 42132555 is about 6490.9594822337. The cubic root of 42132555 is about 347.9679667304.

Adding to 42132555 its reverse (55523124), we get a palindrome (97655679).

The spelling of 42132555 in words is "forty-two million, one hundred thirty-two thousand, five hundred fifty-five".