102742361 has 4 divisors (see below), whose sum is σ = 104426724. Its totient is φ = 101058000.

The previous prime is 102742337. The next prime is 102742399. The reversal of 102742361 is 163247201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33120025 + 69622336 = 5755^2 + 8344^2 .

It is a cyclic number.

It is not a de Polignac number, because 102742361 - 2¹⁰ = 102741337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102742361.

It is not an unprimeable number, because it can be changed into a prime (102742561) 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, 842090 + ... + 842211.

It is an arithmetic number, because the mean of its divisors is an integer number (26106681).

Almost surely, 2^102742361 is an apocalyptic number.

It is an amenable number.

102742361 is a deficient number, since it is larger than the sum of its proper divisors (1684363).

102742361 is an equidigital number, since it uses as much as digits as its factorization.

102742361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1684362.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 102742361 is about 10136.1906552708. The cubic root of 102742361 is about 468.3636485599.

Adding to 102742361 its reverse (163247201), we get a palindrome (265989562).

The spelling of 102742361 in words is "one hundred two million, seven hundred forty-two thousand, three hundred sixty-one".