102542177 has 4 divisors (see below), whose sum is σ = 104280240. Its totient is φ = 100804116.

The previous prime is 102542161. The next prime is 102542179. The reversal of 102542177 is 771245201.

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: 771245201 = 877 ⋅879413.

It is a cyclic number.

It is not a de Polignac number, because 102542177 - 2⁴ = 102542161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102542179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 868943 + ... + 869060.

It is an arithmetic number, because the mean of its divisors is an integer number (26070060).

Almost surely, 2^102542177 is an apocalyptic number.

It is an amenable number.

102542177 is a deficient number, since it is larger than the sum of its proper divisors (1738063).

102542177 is an equidigital number, since it uses as much as digits as its factorization.

102542177 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1738062.

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 102542177 is about 10126.3111249852. The cubic root of 102542177 is about 468.0592630165.

Adding to 102542177 its reverse (771245201), we get a palindrome (873787378).

The spelling of 102542177 in words is "one hundred two million, five hundred forty-two thousand, one hundred seventy-seven".