100840046 has 4 divisors (see below), whose sum is σ = 151260072. Its totient is φ = 50420022.

The previous prime is 100840043. The next prime is 100840067. The reversal of 100840046 is 640048001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 640048001 = 97 ⋅6598433.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100840043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25210010 + ... + 25210013.

It is an arithmetic number, because the mean of its divisors is an integer number (37815018).

Almost surely, 2^100840046 is an apocalyptic number.

100840046 is a deficient number, since it is larger than the sum of its proper divisors (50420026).

100840046 is an equidigital number, since it uses as much as digits as its factorization.

100840046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50420025.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 100840046 is about 10041.9144589067. The cubic root of 100840046 is about 465.4549768918.

Adding to 100840046 its reverse (640048001), we get a palindrome (740888047).

The spelling of 100840046 in words is "one hundred million, eight hundred forty thousand, forty-six".