100432505 has 8 divisors (see below), whose sum is σ = 120585672. Its totient is φ = 80301568.

The previous prime is 100432487. The next prime is 100432523. The reversal of 100432505 is 505234001.

It is an interprime number because it is at equal distance from previous prime (100432487) and next prime (100432523).

It can be written as a sum of positive squares in 4 ways, for example, as 64336441 + 36096064 = 8021^2 + 6008^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100432505 - 2⁶ = 100432441 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6947 + ... + 15783.

It is an arithmetic number, because the mean of its divisors is an integer number (15073209).

Almost surely, 2^100432505 is an apocalyptic number.

It is an amenable number.

100432505 is a deficient number, since it is larger than the sum of its proper divisors (20153167).

100432505 is an equidigital number, since it uses as much as digits as its factorization.

100432505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11115.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 100432505 is about 10021.6019178572. The cubic root of 100432505 is about 464.8270910674.

Adding to 100432505 its reverse (505234001), we get a palindrome (605666506).

The spelling of 100432505 in words is "one hundred million, four hundred thirty-two thousand, five hundred five".