123958140 has 48 divisors (see below), whose sum is σ = 356469792. Its totient is φ = 32161536.

The previous prime is 123958127. The next prime is 123958141. The reversal of 123958140 is 41859321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123958141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25699 + ... + 30138.

It is an arithmetic number, because the mean of its divisors is an integer number (7426454).

Almost surely, 2^123958140 is an apocalyptic number.

123958140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123958140 is an abundant number, since it is smaller than the sum of its proper divisors (232511652).

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

123958140 is a wasteful number, since it uses less digits than its factorization.

123958140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55886 (or 55884 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 123958140 is about 11133.6489975210. The cubic root of 123958140 is about 498.6069759053.

The spelling of 123958140 in words is "one hundred twenty-three million, nine hundred fifty-eight thousand, one hundred forty".