102870321 has 8 divisors (see below), whose sum is σ = 137656704. Its totient is φ = 68332080.

The previous prime is 102870311. The next prime is 102870331. The reversal of 102870321 is 123078201.

It is an interprime number because it is at equal distance from previous prime (102870311) and next prime (102870331).

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

It is not a de Polignac number, because 102870321 - 2⁵ = 102870289 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 102870291 and 102870300.

It is not an unprimeable number, because it can be changed into a prime (102870311) 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, 61065 + ... + 62726.

It is an arithmetic number, because the mean of its divisors is an integer number (17207088).

Almost surely, 2^102870321 is an apocalyptic number.

It is an amenable number.

102870321 is a deficient number, since it is larger than the sum of its proper divisors (34786383).

102870321 is a wasteful number, since it uses less digits than its factorization.

102870321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124071.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 102870321 is about 10142.5007271383. The cubic root of 102870321 is about 468.5580083433.

The spelling of 102870321 in words is "one hundred two million, eight hundred seventy thousand, three hundred twenty-one".