100610138 has 4 divisors (see below), whose sum is σ = 150915210. Its totient is φ = 50305068.

The previous prime is 100610137. The next prime is 100610143. The reversal of 100610138 is 831016001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 831016001 = 1321 ⋅629081.

It can be written as a sum of positive squares in only one way, i.e., 74528689 + 26081449 = 8633^2 + 5107^2 .

It is not an unprimeable number, because it can be changed into a prime (100610137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25152533 + ... + 25152536.

Almost surely, 2^100610138 is an apocalyptic number.

100610138 is a deficient number, since it is larger than the sum of its proper divisors (50305072).

100610138 is an equidigital number, since it uses as much as digits as its factorization.

100610138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50305071.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 100610138 is about 10030.4605078730. The cubic root of 100610138 is about 465.1009731778.

Adding to 100610138 its reverse (831016001), we get a palindrome (931626139).

The spelling of 100610138 in words is "one hundred million, six hundred ten thousand, one hundred thirty-eight".