123253140 has 48 divisors (see below), whose sum is σ = 346264128. Its totient is φ = 32757504.

The previous prime is 123253073. The next prime is 123253157. The reversal of 123253140 is 41352321.

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 in 15 ways as a sum of consecutive naturals, for example, 15499 + ... + 22061.

It is an arithmetic number, because the mean of its divisors is an integer number (7213836).

Almost surely, 2^123253140 is an apocalyptic number.

123253140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123253140 is an abundant number, since it is smaller than the sum of its proper divisors (223010988).

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

123253140 is a wasteful number, since it uses less digits than its factorization.

123253140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6888 (or 6886 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 123253140 is about 11101.9430731742. The cubic root of 123253140 is about 497.6599184557.

The spelling of 123253140 in words is "one hundred twenty-three million, two hundred fifty-three thousand, one hundred forty".