102663442 has 32 divisors (see below), whose sum is σ = 188310528. Its totient is φ = 40974336.

The previous prime is 102663439. The next prime is 102663443. The reversal of 102663442 is 244366201.

It is a self number, because there is not a number n which added to its sum of digits gives 102663442.

It is not an unprimeable number, because it can be changed into a prime (102663443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20863 + ... + 25309.

It is an arithmetic number, because the mean of its divisors is an integer number (5884704).

Almost surely, 2^102663442 is an apocalyptic number.

102663442 is a deficient number, since it is larger than the sum of its proper divisors (85647086).

102663442 is a wasteful number, since it uses less digits than its factorization.

102663442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4570.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 102663442 is about 10132.2969755135. The cubic root of 102663442 is about 468.2436971965.

The spelling of 102663442 in words is "one hundred two million, six hundred sixty-three thousand, four hundred forty-two".