101742723 has 20 divisors (see below), whose sum is σ = 152732008. Its totient is φ = 67495680.

The previous prime is 101742709. The next prime is 101742761. The reversal of 101742723 is 327247101.

It is a happy number.

It is not a de Polignac number, because 101742723 - 2⁹ = 101742211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101742323) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 14115 + ... + 20067.

Almost surely, 2^101742723 is an apocalyptic number.

101742723 is a deficient number, since it is larger than the sum of its proper divisors (50989285).

101742723 is an equidigital number, since it uses as much as digits as its factorization.

101742723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6176 (or 6167 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 101742723 is about 10086.7597869683. The cubic root of 101742723 is about 466.8397045945.

Adding to 101742723 its reverse (327247101), we get a palindrome (428989824).

The spelling of 101742723 in words is "one hundred one million, seven hundred forty-two thousand, seven hundred twenty-three".