101138745 has 16 divisors (see below), whose sum is σ = 161949312. Its totient is φ = 53898240.

The previous prime is 101138731. The next prime is 101138749. The reversal of 101138745 is 547831101.

It is not a de Polignac number, because 101138745 - 2⁷ = 101138617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101138749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30100 + ... + 33290.

It is an arithmetic number, because the mean of its divisors is an integer number (10121832).

Almost surely, 2^101138745 is an apocalyptic number.

101138745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

101138745 is a deficient number, since it is larger than the sum of its proper divisors (60810567).

101138745 is a wasteful number, since it uses less digits than its factorization.

101138745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5312.

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 101138745 is about 10056.7760738718. The cubic root of 101138745 is about 465.9140996718.

Adding to 101138745 its reverse (547831101), we get a palindrome (648969846).

The spelling of 101138745 in words is "one hundred one million, one hundred thirty-eight thousand, seven hundred forty-five".