102140448 has 24 divisors (see below), whose sum is σ = 268118928. Its totient is φ = 34046784.

The previous prime is 102140429. The next prime is 102140449. The reversal of 102140448 is 844041201.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×102140448² = 20865342235281408, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (102140449) 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, 531886 + ... + 532077.

It is an arithmetic number, because the mean of its divisors is an integer number (11171622).

Almost surely, 2^102140448 is an apocalyptic number.

It is an amenable number.

102140448 is an abundant number, since it is smaller than the sum of its proper divisors (165978480).

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

102140448 is a wasteful number, since it uses less digits than its factorization.

102140448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063976 (or 1063968 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 102140448 is about 10106.4557585733. The cubic root of 102140448 is about 467.4472252093.

Adding to 102140448 its reverse (844041201), we get a palindrome (946181649).

The spelling of 102140448 in words is "one hundred two million, one hundred forty thousand, four hundred forty-eight".