101542445 has 16 divisors (see below), whose sum is σ = 132169968. Its totient is φ = 74588160.

The previous prime is 101542439. The next prime is 101542477. The reversal of 101542445 is 544245101.

It can be written as a sum of positive squares in 8 ways, for example, as 218089 + 101324356 = 467^2 + 10066^2 .

It is not a de Polignac number, because 101542445 - 2⁴ = 101542429 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11084 + ... + 18053.

It is an arithmetic number, because the mean of its divisors is an integer number (8260623).

Almost surely, 2^101542445 is an apocalyptic number.

It is an amenable number.

101542445 is a deficient number, since it is larger than the sum of its proper divisors (30627523).

101542445 is a wasteful number, since it uses less digits than its factorization.

101542445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29200.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 101542445 is about 10076.8271296078. The cubic root of 101542445 is about 466.5331826272.

Adding to 101542445 its reverse (544245101), we get a palindrome (645787546).

The spelling of 101542445 in words is "one hundred one million, five hundred forty-two thousand, four hundred forty-five".