102240040 has 128 divisors (see below), whose sum is σ = 284912640. Its totient is φ = 32219136.

The previous prime is 102240011. The next prime is 102240053. The reversal of 102240040 is 40042201.

It is a self number, because there is not a number n which added to its sum of digits gives 102240040.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 223492 + ... + 223948.

It is an arithmetic number, because the mean of its divisors is an integer number (2225880).

Almost surely, 2^102240040 is an apocalyptic number.

102240040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102240040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142456320).

102240040 is an abundant number, since it is smaller than the sum of its proper divisors (182672600).

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

102240040 is a wasteful number, since it uses less digits than its factorization.

102240040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539 (or 535 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 102240040 is about 10111.3817057809. The cubic root of 102240040 is about 467.5991039290.

Adding to 102240040 its reverse (40042201), we get a palindrome (142282241).

The spelling of 102240040 in words is "one hundred two million, two hundred forty thousand, forty".