100021054 has 24 divisors (see below), whose sum is σ = 183715560. Its totient is φ = 40609296.

The previous prime is 100021039. The next prime is 100021091. The reversal of 100021054 is 450120001.

It is a super-2 number, since 2×100021054² = 20008422486541832, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 24997 + ... + 28720.

It is an arithmetic number, because the mean of its divisors is an integer number (7654815).

Almost surely, 2^100021054 is an apocalyptic number.

100021054 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

100021054 is a deficient number, since it is larger than the sum of its proper divisors (83694506).

100021054 is a wasteful number, since it uses less digits than its factorization.

100021054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53752 (or 53745 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 100021054 is about 10001.0526445970. The cubic root of 100021054 is about 464.1914557459.

Adding to 100021054 its reverse (450120001), we get a palindrome (550141055).

The spelling of 100021054 in words is "one hundred million, twenty-one thousand, fifty-four".