102240453 has 16 divisors (see below), whose sum is σ = 158350976. Its totient is φ = 57464640.

The previous prime is 102240433. The next prime is 102240469. The reversal of 102240453 is 354042201.

It is not a de Polignac number, because 102240453 - 2⁵ = 102240421 is a prime.

It is a super-2 number, since 2×102240453² = 20906220459290418, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102240433) 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, 38626 + ... + 41187.

It is an arithmetic number, because the mean of its divisors is an integer number (9896936).

Almost surely, 2^102240453 is an apocalyptic number.

It is an amenable number.

102240453 is a deficient number, since it is larger than the sum of its proper divisors (56110523).

102240453 is an equidigital number, since it uses as much as digits as its factorization.

102240453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79884.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 102240453 is about 10111.4021282906. The cubic root of 102240453 is about 467.5997335524.

Adding to 102240453 its reverse (354042201), we get a palindrome (456282654).

The spelling of 102240453 in words is "one hundred two million, two hundred forty thousand, four hundred fifty-three".