102563242 has 4 divisors (see below), whose sum is σ = 153844866. Its totient is φ = 51281620.

The previous prime is 102563203. The next prime is 102563243. The reversal of 102563242 is 242365201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 242365201 = 13 ⋅18643477.

It can be written as a sum of positive squares in only one way, i.e., 77070841 + 25492401 = 8779^2 + 5049^2 .

It is not an unprimeable number, because it can be changed into a prime (102563243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25640809 + ... + 25640812.

Almost surely, 2^102563242 is an apocalyptic number.

102563242 is a deficient number, since it is larger than the sum of its proper divisors (51281624).

102563242 is an equidigital number, since it uses as much as digits as its factorization.

102563242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51281623.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 102563242 is about 10127.3511837992. The cubic root of 102563242 is about 468.0913115959.

The spelling of 102563242 in words is "one hundred two million, five hundred sixty-three thousand, two hundred forty-two".