102020144 has 20 divisors (see below), whose sum is σ = 204480960. Its totient is φ = 49250880.

The previous prime is 102020143. The next prime is 102020147. The reversal of 102020144 is 441020201.

It is not an unprimeable number, because it can be changed into a prime (102020143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109472 + ... + 110399.

It is an arithmetic number, because the mean of its divisors is an integer number (10224048).

Almost surely, 2^102020144 is an apocalyptic number.

It is an amenable number.

102020144 is an abundant number, since it is smaller than the sum of its proper divisors (102460816).

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

102020144 is a wasteful number, since it uses less digits than its factorization.

102020144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219908 (or 219902 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 102020144 is about 10100.5021657341. The cubic root of 102020144 is about 467.2636287815.

Adding to 102020144 its reverse (441020201), we get a palindrome (543040345).

It can be divided in two parts, 1020201 and 44, that multiplied together give a palindrome (44888844).

The spelling of 102020144 in words is "one hundred two million, twenty thousand, one hundred forty-four".