123494420 has 24 divisors (see below), whose sum is σ = 296386944. Its totient is φ = 42340896.

The previous prime is 123494389. The next prime is 123494447. The reversal of 123494420 is 24494321.

It is a super-2 number, since 2×123494420² = 30501743542272800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 440912 + ... + 441191.

It is an arithmetic number, because the mean of its divisors is an integer number (12349456).

Almost surely, 2^123494420 is an apocalyptic number.

123494420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123494420 is an abundant number, since it is smaller than the sum of its proper divisors (172892524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123494420 is a wasteful number, since it uses less digits than its factorization.

123494420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882119 (or 882117 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 123494420 is about 11112.8043265415. The cubic root of 123494420 is about 497.9844460016.

Subtracting from 123494420 its reverse (24494321), we obtain a palindrome (99000099).

The spelling of 123494420 in words is "one hundred twenty-three million, four hundred ninety-four thousand, four hundred twenty".