102721204 has 12 divisors (see below), whose sum is σ = 179854528. Its totient is φ = 51334200.

The previous prime is 102721153. The next prime is 102721211. The reversal of 102721204 is 402127201.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4069 + ... + 14899.

Almost surely, 2^102721204 is an apocalyptic number.

It is an amenable number.

102721204 is a deficient number, since it is larger than the sum of its proper divisors (77133324).

102721204 is a wasteful number, since it uses less digits than its factorization.

102721204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13206 (or 13204 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 102721204 is about 10135.1469648940. The cubic root of 102721204 is about 468.3314974268.

Adding to 102721204 its reverse (402127201), we get a palindrome (504848405).

It can be divided in two parts, 10272 and 1204, that added together give a triangular number (11476 = T₁₅₁).

The spelling of 102721204 in words is "one hundred two million, seven hundred twenty-one thousand, two hundred four".