102123932490 has 160 divisors (see below), whose sum is σ = 279655200000. Its totient is φ = 26733048192.

The previous prime is 102123932483. The next prime is 102123932501. The reversal of 102123932490 is 94239321201.

102123932490 is a `hidden beast` number, since 1 + 0 + 21 + 2 + 393 + 249 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 51086511 + ... + 51088509.

It is an arithmetic number, because the mean of its divisors is an integer number (1747845000).

Almost surely, 2^102123932490 is an apocalyptic number.

102123932490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 102123932490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139827600000).

102123932490 is an abundant number, since it is smaller than the sum of its proper divisors (177531267510).

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

102123932490 is a wasteful number, since it uses less digits than its factorization.

102123932490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3146 (or 3137 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The spelling of 102123932490 in words is "one hundred two billion, one hundred twenty-three million, nine hundred thirty-two thousand, four hundred ninety".