101542 has 8 divisors (see below), whose sum is σ = 174096. Its totient is φ = 43512.

The previous prime is 101537. The next prime is 101561. The reversal of 101542 is 245101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

101542 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3613 + ... + 3640.

It is an arithmetic number, because the mean of its divisors is an integer number (21762).

2¹⁰¹⁵⁴² is an apocalyptic number.

101542 is a deficient number, since it is larger than the sum of its proper divisors (72554).

101542 is an equidigital number, since it uses as much as digits as its factorization.

101542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7262.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 101542 is about 318.6565549302. The cubic root of 101542 is about 46.6532501114.

Adding to 101542 its reverse (245101), we get a palindrome (346643).

The spelling of 101542 in words is "one hundred one thousand, five hundred forty-two".