102051742492 has 72 divisors (see below), whose sum is σ = 218280841632. Its totient is φ = 40754227200.

The previous prime is 102051742489. The next prime is 102051742493. The reversal of 102051742492 is 294247150201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102051742493) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4845168 + ... + 4866184.

It is an arithmetic number, because the mean of its divisors is an integer number (3031678356).

Almost surely, 2^102051742492 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102051742492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109140420816).

102051742492 is an abundant number, since it is smaller than the sum of its proper divisors (116229099140).

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

102051742492 is a wasteful number, since it uses less digits than its factorization.

102051742492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21247 (or 21144 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

Adding to 102051742492 its reverse (294247150201), we get a palindrome (396298892693).

The spelling of 102051742492 in words is "one hundred two billion, fifty-one million, seven hundred forty-two thousand, four hundred ninety-two".