102042321240 has 64 divisors (see below), whose sum is σ = 310696047360. Its totient is φ = 26805144960.

The previous prime is 102042321197. The next prime is 102042321263. The reversal of 102042321240 is 42123240201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6337876 + ... + 6353955.

It is an arithmetic number, because the mean of its divisors is an integer number (4854625740).

Almost surely, 2^102042321240 is an apocalyptic number.

102042321240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102042321240 is an abundant number, since it is smaller than the sum of its proper divisors (208653726120).

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

102042321240 is a wasteful number, since it uses less digits than its factorization.

102042321240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12691912 (or 12691908 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 102042321240 its reverse (42123240201), we get a palindrome (144165561441).

The spelling of 102042321240 in words is "one hundred two billion, forty-two million, three hundred twenty-one thousand, two hundred forty".