101143742 has 36 divisors (see below), whose sum is σ = 184586976. Its totient is φ = 41441400.

The previous prime is 101143741. The next prime is 101143753. The reversal of 101143742 is 247341101.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101143741) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 50867 + ... + 52817.

It is an arithmetic number, because the mean of its divisors is an integer number (5127416).

Almost surely, 2^101143742 is an apocalyptic number.

101143742 is a deficient number, since it is larger than the sum of its proper divisors (83443234).

101143742 is a wasteful number, since it uses less digits than its factorization.

101143742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2013 (or 1983 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 101143742 is about 10057.0245102615. The cubic root of 101143742 is about 465.9217727431.

Adding to 101143742 its reverse (247341101), we get a palindrome (348484843).

The spelling of 101143742 in words is "one hundred one million, one hundred forty-three thousand, seven hundred forty-two".