123193400 has 48 divisors (see below), whose sum is σ = 312468840. Its totient is φ = 44796800.

The previous prime is 123193381. The next prime is 123193403. The reversal of 123193400 is 4391321.

It is a super-2 number, since 2×123193400² = 30353227607120000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123193403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25799 + ... + 30198.

Almost surely, 2^123193400 is an apocalyptic number.

123193400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123193400 is an abundant number, since it is smaller than the sum of its proper divisors (189275440).

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

123193400 is a wasteful number, since it uses less digits than its factorization.

123193400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56024 (or 56015 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 123193400 is about 11099.2522270647. The cubic root of 123193400 is about 497.5795012802.

The spelling of 123193400 in words is "one hundred twenty-three million, one hundred ninety-three thousand, four hundred".