101542161 has 24 divisors (see below), whose sum is σ = 158726304. Its totient is φ = 57570240.

The previous prime is 101542157. The next prime is 101542183. The reversal of 101542161 is 161245101.

It is not a de Polignac number, because 101542161 - 2² = 101542157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (101542361) 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 23 ways as a sum of consecutive naturals, for example, 16621 + ... + 21893.

It is an arithmetic number, because the mean of its divisors is an integer number (6613596).

Almost surely, 2^101542161 is an apocalyptic number.

It is an amenable number.

101542161 is a deficient number, since it is larger than the sum of its proper divisors (57184143).

101542161 is a wasteful number, since it uses less digits than its factorization.

101542161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5421 (or 5414 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 101542161 is about 10076.8130378607. The cubic root of 101542161 is about 466.5327476842.

Adding to 101542161 its reverse (161245101), we get a palindrome (262787262).

The spelling of 101542161 in words is "one hundred one million, five hundred forty-two thousand, one hundred sixty-one".