102391147 has 8 divisors (see below), whose sum is σ = 106966944. Its totient is φ = 97825728.

The previous prime is 102391139. The next prime is 102391169. The reversal of 102391147 is 741193201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102391147 - 2³ = 102391139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102391747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23103 + ... + 27175.

It is an arithmetic number, because the mean of its divisors is an integer number (13370868).

Almost surely, 2^102391147 is an apocalyptic number.

102391147 is a deficient number, since it is larger than the sum of its proper divisors (4575797).

102391147 is a wasteful number, since it uses less digits than its factorization.

102391147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5189.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 102391147 is about 10118.8510711444. The cubic root of 102391147 is about 467.8293552625.

The spelling of 102391147 in words is "one hundred two million, three hundred ninety-one thousand, one hundred forty-seven".