102440544 has 36 divisors (see below), whose sum is σ = 269166996. Its totient is φ = 34113792.

The previous prime is 102440543. The next prime is 102440561. The reversal of 102440544 is 445044201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102440543) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 98652 + ... + 99684.

It is an arithmetic number, because the mean of its divisors is an integer number (7476861).

Almost surely, 2^102440544 is an apocalyptic number.

It is an amenable number.

102440544 is an abundant number, since it is smaller than the sum of its proper divisors (166726452).

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

102440544 is an frugal number, since it uses more digits than its factorization.

102440544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2079 (or 1038 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 102440544 is about 10121.2916171801. The cubic root of 102440544 is about 467.9045754746.

Multiplying 102440544 by its sum of digits (24), we get a square (2458573056 = 49584²).

102440544 divided by its sum of digits (24) gives a square (4268356 = 2066²).

Adding to 102440544 its reverse (445044201), we get a palindrome (547484745).

The spelling of 102440544 in words is "one hundred two million, four hundred forty thousand, five hundred forty-four".