102040071 has 16 divisors (see below), whose sum is σ = 156393984. Its totient is φ = 57969504.

The previous prime is 102040061. The next prime is 102040073. The reversal of 102040071 is 170040201.

It is not a de Polignac number, because 102040071 - 2⁷ = 102039943 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102040071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102040073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10411 + ... + 17676.

It is an arithmetic number, because the mean of its divisors is an integer number (9774624).

Almost surely, 2^102040071 is an apocalyptic number.

102040071 is a deficient number, since it is larger than the sum of its proper divisors (54353913).

102040071 is a wasteful number, since it uses less digits than its factorization.

102040071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28270.

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 102040071 is about 10101.4885536737. The cubic root of 102040071 is about 467.2940494279.

Adding to 102040071 its reverse (170040201), we get a palindrome (272080272).

The spelling of 102040071 in words is "one hundred two million, forty thousand, seventy-one".