101238145 has 12 divisors (see below), whose sum is σ = 129054204. Its totient is φ = 76225280.

The previous prime is 101238133. The next prime is 101238149. The reversal of 101238145 is 541832101.

It can be written as a sum of positive squares in 6 ways, for example, as 998001 + 100240144 = 999^2 + 10012^2 .

It is not a de Polignac number, because 101238145 - 2⁷ = 101238017 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101238149) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33586 + ... + 36475.

It is an arithmetic number, because the mean of its divisors is an integer number (10754517).

Almost surely, 2^101238145 is an apocalyptic number.

It is an amenable number.

101238145 is a deficient number, since it is larger than the sum of its proper divisors (27816059).

101238145 is an equidigital number, since it uses as much as digits as its factorization.

101238145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70100 (or 70083 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 101238145 is about 10061.7168018187. The cubic root of 101238145 is about 466.0666844466.

The spelling of 101238145 in words is "one hundred one million, two hundred thirty-eight thousand, one hundred forty-five".