102742254 has 48 divisors (see below), whose sum is σ = 239073120. Its totient is φ = 31772160.

The previous prime is 102742231. The next prime is 102742259. The reversal of 102742254 is 452247201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102742259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19362 + ... + 24090.

It is an arithmetic number, because the mean of its divisors is an integer number (4980690).

Almost surely, 2^102742254 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102742254, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119536560).

102742254 is an abundant number, since it is smaller than the sum of its proper divisors (136330866).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102742254 is a wasteful number, since it uses less digits than its factorization.

102742254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4825 (or 4822 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 102742254 is about 10136.1853771525. The cubic root of 102742254 is about 468.3634859690.

Adding to 102742254 its reverse (452247201), we get a palindrome (554989455).

The spelling of 102742254 in words is "one hundred two million, seven hundred forty-two thousand, two hundred fifty-four".