102122389 has 4 divisors (see below), whose sum is σ = 102151980. Its totient is φ = 102092800.

The previous prime is 102122387. The next prime is 102122393. The reversal of 102122389 is 983221201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 983221201 = 1091 ⋅901211.

It can be written as a sum of positive squares in 2 ways, for example, as 85655025 + 16467364 = 9255^2 + 4058^2 .

It is a cyclic number.

It is not a de Polignac number, because 102122389 - 2¹ = 102122387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102122387) 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, 8812 + ... + 16789.

It is an arithmetic number, because the mean of its divisors is an integer number (25537995).

Almost surely, 2^102122389 is an apocalyptic number.

It is an amenable number.

102122389 is a deficient number, since it is larger than the sum of its proper divisors (29591).

102122389 is an equidigital number, since it uses as much as digits as its factorization.

102122389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29590.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 102122389 is about 10105.5622802494. The cubic root of 102122389 is about 467.4196744947.

The spelling of 102122389 in words is "one hundred two million, one hundred twenty-two thousand, three hundred eighty-nine".