123273900 has 252 divisors, whose sum is σ = 426925800. Its totient is φ = 30792960.

The previous prime is 123273893. The next prime is 123273901. The reversal of 123273900 is 9372321.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (123273901) by changing a digit.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 1385056 + ... + 1385144.

It is an arithmetic number, because the mean of its divisors is an integer number (1694150).

Almost surely, 2^123273900 is an apocalyptic number.

123273900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123273900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213462900).

123273900 is an abundant number, since it is smaller than the sum of its proper divisors (303651900).

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

123273900 is a wasteful number, since it uses less digits than its factorization.

123273900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 123273900 is about 11102.8780052741. The cubic root of 123273900 is about 497.6878578113.

The spelling of 123273900 in words is "one hundred twenty-three million, two hundred seventy-three thousand, nine hundred".