102722373 has 18 divisors (see below), whose sum is σ = 159961074. Its totient is φ = 63146304.

The previous prime is 102722369. The next prime is 102722413. The reversal of 102722373 is 373227201.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 12510369 + 90212004 = 3537^2 + 9498^2 .

It is not a de Polignac number, because 102722373 - 2² = 102722369 is a prime.

It is a super-2 number, since 2×102722373² = 21103771829502258, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102722573) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 109161 + ... + 110097.

Almost surely, 2^102722373 is an apocalyptic number.

102722373 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

102722373 is a deficient number, since it is larger than the sum of its proper divisors (57238701).

102722373 is an frugal number, since it uses more digits than its factorization.

102722373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1893 (or 953 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 102722373 is about 10135.2046353293. The cubic root of 102722373 is about 468.3332740073. Note that the first 3 decimals are identical.

Adding to 102722373 its reverse (373227201), we get a palindrome (475949574).

The spelling of 102722373 in words is "one hundred two million, seven hundred twenty-two thousand, three hundred seventy-three".