102720453 has 16 divisors (see below), whose sum is σ = 154232832. Its totient is φ = 60246000.

The previous prime is 102720439. The next prime is 102720463. The reversal of 102720453 is 354027201.

It is not a de Polignac number, because 102720453 - 2¹⁰ = 102719429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102720463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49183 + ... + 51228.

It is an arithmetic number, because the mean of its divisors is an integer number (9639552).

Almost surely, 2^102720453 is an apocalyptic number.

It is an amenable number.

102720453 is a deficient number, since it is larger than the sum of its proper divisors (51512379).

102720453 is a wasteful number, since it uses less digits than its factorization.

102720453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100456.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 102720453 is about 10135.1099155362. The cubic root of 102720453 is about 468.3303560922.

Adding to 102720453 its reverse (354027201), we get a palindrome (456747654).

The spelling of 102720453 in words is "one hundred two million, seven hundred twenty thousand, four hundred fifty-three".