101121542 has 16 divisors (see below), whose sum is σ = 160917840. Its totient is φ = 47493888.

The previous prime is 101121499. The next prime is 101121551. The reversal of 101121542 is 245121101.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 101121542.

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 7 ways as a sum of consecutive naturals, for example, 16733 + ... + 21959.

It is an arithmetic number, because the mean of its divisors is an integer number (10057365).

Almost surely, 2^101121542 is an apocalyptic number.

101121542 is a deficient number, since it is larger than the sum of its proper divisors (59796298).

101121542 is a wasteful number, since it uses less digits than its factorization.

101121542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5815.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 101121542 is about 10055.9207435222. The cubic root of 101121542 is about 465.8876819201.

Adding to 101121542 its reverse (245121101), we get a palindrome (346242643).

The spelling of 101121542 in words is "one hundred one million, one hundred twenty-one thousand, five hundred forty-two".