102240454 has 4 divisors (see below), whose sum is σ = 153360684. Its totient is φ = 51120226.

The previous prime is 102240433. The next prime is 102240469. The reversal of 102240454 is 454042201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 454042201 = 131 ⋅3465971.

It is a super-2 number, since 2×102240454² = 20906220868252232, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 25560112 + ... + 25560115.

It is an arithmetic number, because the mean of its divisors is an integer number (38340171).

Almost surely, 2^102240454 is an apocalyptic number.

102240454 is a deficient number, since it is larger than the sum of its proper divisors (51120230).

102240454 is an equidigital number, since it uses as much as digits as its factorization.

102240454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51120229.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 102240454 is about 10111.4021777397. The cubic root of 102240454 is about 467.5997350769.

Adding to 102240454 its reverse (454042201), we get a palindrome (556282655).

The spelling of 102240454 in words is "one hundred two million, two hundred forty thousand, four hundred fifty-four".