101042542 has 16 divisors (see below), whose sum is σ = 158736672. Its totient is φ = 48146560.

The previous prime is 101042533. The next prime is 101042549. The reversal of 101042542 is 245240101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101042549) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9018 + ... + 16834.

It is an arithmetic number, because the mean of its divisors is an integer number (9921042).

Almost surely, 2^101042542 is an apocalyptic number.

101042542 is a deficient number, since it is larger than the sum of its proper divisors (57694130).

101042542 is a wasteful number, since it uses less digits than its factorization.

101042542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8123.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 101042542 is about 10051.9919418989. The cubic root of 101042542 is about 465.7663272453.

Adding to 101042542 its reverse (245240101), we get a palindrome (346282643).

The spelling of 101042542 in words is "one hundred one million, forty-two thousand, five hundred forty-two".