102152149 has 4 divisors (see below), whose sum is σ = 111438720. Its totient is φ = 92865580.

The previous prime is 102152143. The next prime is 102152191. The reversal of 102152149 is 941251201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 941251201 = 11 ⋅85568291.

It is a cyclic number.

It is not a de Polignac number, because 102152149 - 2⁷ = 102152021 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 (102152143) 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, 4643269 + ... + 4643290.

It is an arithmetic number, because the mean of its divisors is an integer number (27859680).

Almost surely, 2^102152149 is an apocalyptic number.

It is an amenable number.

102152149 is a deficient number, since it is larger than the sum of its proper divisors (9286571).

102152149 is an equidigital number, since it uses as much as digits as its factorization.

102152149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9286570.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 102152149 is about 10107.0346294054. The cubic root of 102152149 is about 467.4650744591.

It can be divided in two parts, 102 and 152149, that added together give a palindrome (152251).

The spelling of 102152149 in words is "one hundred two million, one hundred fifty-two thousand, one hundred forty-nine".