123783454 has 4 divisors (see below), whose sum is σ = 185675184. Its totient is φ = 61891726.

The previous prime is 123783449. The next prime is 123783481. The reversal of 123783454 is 454387321.

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: 454387321 = 43 ⋅10567147.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30945862 + ... + 30945865.

It is an arithmetic number, because the mean of its divisors is an integer number (46418796).

Almost surely, 2^123783454 is an apocalyptic number.

123783454 is a deficient number, since it is larger than the sum of its proper divisors (61891730).

123783454 is an equidigital number, since it uses as much as digits as its factorization.

123783454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61891729.

The product of its digits is 80640, while the sum is 37.

The square root of 123783454 is about 11125.8012745150. The cubic root of 123783454 is about 498.3726478629.

The spelling of 123783454 in words is "one hundred twenty-three million, seven hundred eighty-three thousand, four hundred fifty-four".