100542281 has 16 divisors (see below), whose sum is σ = 121497600. Its totient is φ = 81276048.

The previous prime is 100542263. The next prime is 100542307. The reversal of 100542281 is 182245001.

It is not a de Polignac number, because 100542281 - 2²⁶ = 33433417 is a prime.

It is a super-2 number, since 2×100542281² = 20217500537365922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (100542181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30206 + ... + 33368.

It is an arithmetic number, because the mean of its divisors is an integer number (7593600).

Almost surely, 2^100542281 is an apocalyptic number.

It is an amenable number.

100542281 is a deficient number, since it is larger than the sum of its proper divisors (20955319).

100542281 is a wasteful number, since it uses less digits than its factorization.

100542281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3428.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 100542281 is about 10027.0773907455. The cubic root of 100542281 is about 464.9963864521.

Adding to 100542281 its reverse (182245001), we get a palindrome (282787282).

The spelling of 100542281 in words is "one hundred million, five hundred forty-two thousand, two hundred eighty-one".