102545242 has 16 divisors (see below), whose sum is σ = 164334240. Its totient is φ = 47847888.

The previous prime is 102545213. The next prime is 102545243. The reversal of 102545242 is 242545201.

It is not an unprimeable number, because it can be changed into a prime (102545243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17593 + ... + 22684.

It is an arithmetic number, because the mean of its divisors is an integer number (10270890).

Almost surely, 2^102545242 is an apocalyptic number.

102545242 is a deficient number, since it is larger than the sum of its proper divisors (61788998).

102545242 is a wasteful number, since it uses less digits than its factorization.

102545242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40365.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 102545242 is about 10126.4624622817. The cubic root of 102545242 is about 468.0639264223.

The spelling of 102545242 in words is "one hundred two million, five hundred forty-five thousand, two hundred forty-two".