102721264 has 10 divisors (see below), whose sum is σ = 199022480. Its totient is φ = 51360624.

The previous prime is 102721249. The next prime is 102721271. The reversal of 102721264 is 462127201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3210024 + ... + 3210055.

It is an arithmetic number, because the mean of its divisors is an integer number (19902248).

Almost surely, 2^102721264 is an apocalyptic number.

It is an amenable number.

102721264 is a deficient number, since it is larger than the sum of its proper divisors (96301216).

102721264 is an equidigital number, since it uses as much as digits as its factorization.

102721264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6420087 (or 6420081 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 102721264 is about 10135.1499248901. The cubic root of 102721264 is about 468.3315886118.

Adding to 102721264 its reverse (462127201), we get a palindrome (564848465).

The spelling of 102721264 in words is "one hundred two million, seven hundred twenty-one thousand, two hundred sixty-four".