42100455 has 32 divisors (see below), whose sum is σ = 69053184. Its totient is φ = 21897216.

The previous prime is 42100451. The next prime is 42100463. The reversal of 42100455 is 55400124.

42100455 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42100455 - 2² = 42100451 is a prime.

It is a super-2 number, since 2×42100455² = 3544896622414050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42100451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 163687 + ... + 163943.

It is an arithmetic number, because the mean of its divisors is an integer number (2157912).

Almost surely, 2^42100455 is an apocalyptic number.

42100455 is a deficient number, since it is larger than the sum of its proper divisors (26952729).

42100455 is a wasteful number, since it uses less digits than its factorization.

42100455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 42100455 is about 6488.4863412047. The cubic root of 42100455 is about 347.8795741987.

Adding to 42100455 its reverse (55400124), we get a palindrome (97500579).

The spelling of 42100455 in words is "forty-two million, one hundred thousand, four hundred fifty-five".