123746140 has 48 divisors (see below), whose sum is σ = 299174400. Its totient is φ = 42115392.

The previous prime is 123746123. The next prime is 123746171. The reversal of 123746140 is 41647321.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 123746099 and 123746108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16281 + ... + 22639.

It is an arithmetic number, because the mean of its divisors is an integer number (6232800).

Almost surely, 2^123746140 is an apocalyptic number.

123746140 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 123746140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149587200).

123746140 is an abundant number, since it is smaller than the sum of its proper divisors (175428260).

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

123746140 is a wasteful number, since it uses less digits than its factorization.

123746140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6514 (or 6512 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 123746140 is about 11124.1242351926. The cubic root of 123746140 is about 498.3225653862.

The spelling of 123746140 in words is "one hundred twenty-three million, seven hundred forty-six thousand, one hundred forty".