123151140 has 144 divisors (see below), whose sum is σ = 437044608. Its totient is φ = 27482112.

The previous prime is 123151121. The next prime is 123151157. The reversal of 123151140 is 41151321.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 47 ways as a sum of consecutive naturals, for example, 53044 + ... + 55316.

It is an arithmetic number, because the mean of its divisors is an integer number (3035032).

Almost surely, 2^123151140 is an apocalyptic number.

123151140 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 123151140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218522304).

123151140 is an abundant number, since it is smaller than the sum of its proper divisors (313893468).

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

123151140 is a wasteful number, since it uses less digits than its factorization.

123151140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2338 (or 2333 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 123151140 is about 11097.3483319215. The cubic root of 123151140 is about 497.5225985711.

The spelling of 123151140 in words is "one hundred twenty-three million, one hundred fifty-one thousand, one hundred forty".