100420041555 has 24 divisors (see below), whose sum is σ = 183222533520. Its totient is φ = 50738546880.

The previous prime is 100420041551. The next prime is 100420041569. The reversal of 100420041555 is 555140024001.

100420041555 is a `hidden beast` number, since 100 + 4 + 2 + 0 + 0 + 4 + 1 + 555 = 666.

It is not a de Polignac number, because 100420041555 - 2² = 100420041551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100420041551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58724316 + ... + 58726025.

It is an arithmetic number, because the mean of its divisors is an integer number (7634272230).

Almost surely, 2^100420041555 is an apocalyptic number.

100420041555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

100420041555 is a deficient number, since it is larger than the sum of its proper divisors (82802491965).

100420041555 is a wasteful number, since it uses less digits than its factorization.

100420041555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117450371 (or 117450368 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

Adding to 100420041555 its reverse (555140024001), we get a palindrome (655560065556).

The spelling of 100420041555 in words is "one hundred billion, four hundred twenty million, forty-one thousand, five hundred fifty-five".