102520121440 has 48 divisors (see below), whose sum is σ = 264222317520. Its totient is φ = 37280043520.

The previous prime is 102520121419. The next prime is 102520121513. The reversal of 102520121440 is 44121025201.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29123275 + ... + 29126794.

It is an arithmetic number, because the mean of its divisors is an integer number (5504631615).

Almost surely, 2^102520121440 is an apocalyptic number.

102520121440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102520121440 is an abundant number, since it is smaller than the sum of its proper divisors (161702196080).

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

102520121440 is a wasteful number, since it uses less digits than its factorization.

102520121440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58250095 (or 58250087 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

Adding to 102520121440 its reverse (44121025201), we get a palindrome (146641146641).

The spelling of 102520121440 in words is "one hundred two billion, five hundred twenty million, one hundred twenty-one thousand, four hundred forty".