140123400 has 96 divisors (see below), whose sum is σ = 436207200. Its totient is φ = 37209600.

The previous prime is 140123393. The next prime is 140123411. The reversal of 140123400 is 4321041.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 140123400.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 245115 + ... + 245685.

It is an arithmetic number, because the mean of its divisors is an integer number (4543825).

Almost surely, 2^140123400 is an apocalyptic number.

140123400 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 140123400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218103600).

140123400 is an abundant number, since it is smaller than the sum of its proper divisors (296083800).

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

140123400 is a wasteful number, since it uses less digits than its factorization.

140123400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999 (or 990 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 140123400 is about 11837.3730193823. The cubic root of 140123400 is about 519.4019258053.

Adding to 140123400 its reverse (4321041), we get a palindrome (144444441).

The spelling of 140123400 in words is "one hundred forty million, one hundred twenty-three thousand, four hundred".