102074729 has 4 divisors (see below), whose sum is σ = 102094980. Its totient is φ = 102054480.

The previous prime is 102074719. The next prime is 102074743. The reversal of 102074729 is 927470201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 927470201 = 7 ⋅132495743.

It can be written as a sum of positive squares in 2 ways, for example, as 62094400 + 39980329 = 7880^2 + 6323^2 .

It is a cyclic number.

It is not a de Polignac number, because 102074729 - 2²⁰ = 101026153 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102074695 and 102074704.

It is not an unprimeable number, because it can be changed into a prime (102074719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4067 + ... + 14855.

It is an arithmetic number, because the mean of its divisors is an integer number (25523745).

Almost surely, 2^102074729 is an apocalyptic number.

It is an amenable number.

102074729 is a deficient number, since it is larger than the sum of its proper divisors (20251).

102074729 is an equidigital number, since it uses as much as digits as its factorization.

102074729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20250.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 102074729 is about 10103.2038977742. The cubic root of 102074729 is about 467.3469490510.

The spelling of 102074729 in words is "one hundred two million, seventy-four thousand, seven hundred twenty-nine".