102144940 has 24 divisors (see below), whose sum is σ = 219737952. Its totient is φ = 39861120.

The previous prime is 102144937. The next prime is 102144941. The reversal of 102144940 is 49441201.

It is not an unprimeable number, because it can be changed into a prime (102144941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61464 + ... + 63103.

It is an arithmetic number, because the mean of its divisors is an integer number (9155748).

Almost surely, 2^102144940 is an apocalyptic number.

102144940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102144940 is an abundant number, since it is smaller than the sum of its proper divisors (117593012).

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

102144940 is a wasteful number, since it uses less digits than its factorization.

102144940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124617 (or 124615 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 102144940 is about 10106.6779903191. The cubic root of 102144940 is about 467.4540776763.

The spelling of 102144940 in words is "one hundred two million, one hundred forty-four thousand, nine hundred forty".