102144402 has 20 divisors (see below), whose sum is σ = 228879486. Its totient is φ = 34048080.

The previous prime is 102144397. The next prime is 102144421. The reversal of 102144402 is 204441201.

102144402 is a `hidden beast` number, since 10 + 214 + 440 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 98188281 + 3956121 = 9909^2 + 1989^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 315099 + ... + 315422.

Almost surely, 2^102144402 is an apocalyptic number.

102144402 is an abundant number, since it is smaller than the sum of its proper divisors (126735084).

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

102144402 is an equidigital number, since it uses as much as digits as its factorization.

102144402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630535 (or 630526 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 102144402 is about 10106.6513742189. The cubic root of 102144402 is about 467.4532569773.

Adding to 102144402 its reverse (204441201), we get a palindrome (306585603).

It can be divided in two parts, 10 and 2144402, that added together give a palindrome (2144412).

The spelling of 102144402 in words is "one hundred two million, one hundred forty-four thousand, four hundred two".