100542291 has 12 divisors (see below), whose sum is σ = 137412696. Its totient is φ = 65390080.

The previous prime is 100542263. The next prime is 100542307. The reversal of 100542291 is 192245001.

It is not a de Polignac number, because 100542291 - 2⁶ = 100542227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100542791) 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 11 ways as a sum of consecutive naturals, for example, 4926 + ... + 15011.

It is an arithmetic number, because the mean of its divisors is an integer number (11451058).

Almost surely, 2^100542291 is an apocalyptic number.

100542291 is a deficient number, since it is larger than the sum of its proper divisors (36870405).

100542291 is an equidigital number, since it uses as much as digits as its factorization.

100542291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20022 (or 19981 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 100542291 is about 10027.0778893953. The cubic root of 100542291 is about 464.9964018683.

Adding to 100542291 its reverse (192245001), we get a palindrome (292787292).

The spelling of 100542291 in words is "one hundred million, five hundred forty-two thousand, two hundred ninety-one".