100405414 has 4 divisors (see below), whose sum is σ = 150608124. Its totient is φ = 50202706.

The previous prime is 100405411. The next prime is 100405421. The reversal of 100405414 is 414504001.

100405414 = T₈₁₈₀ + T₈₁₈₁ + T₈₁₈₂.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×100405414² = 20162494321022792, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100405391 and 100405400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100405411) 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 as a sum of consecutive naturals, namely, 25101352 + ... + 25101355.

It is an arithmetic number, because the mean of its divisors is an integer number (37652031).

Almost surely, 2^100405414 is an apocalyptic number.

100405414 is the 8182-nd centered triangular number.

100405414 is a deficient number, since it is larger than the sum of its proper divisors (50202710).

100405414 is an equidigital number, since it uses as much as digits as its factorization.

100405414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50202709.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 100405414 is about 10020.2501964771. The cubic root of 100405414 is about 464.7852926372.

Adding to 100405414 its reverse (414504001), we get a palindrome (514909415).

The spelling of 100405414 in words is "one hundred million, four hundred five thousand, four hundred fourteen".