123745020 has 96 divisors (see below), whose sum is σ = 406737408. Its totient is φ = 27516672.

The previous prime is 123745019. The next prime is 123745021. The reversal of 123745020 is 20547321.

It is an interprime number because it is at equal distance from previous prime (123745019) and next prime (123745021).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123745021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11559 + ... + 19521.

It is an arithmetic number, because the mean of its divisors is an integer number (4236848).

Almost surely, 2^123745020 is an apocalyptic number.

123745020 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 123745020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203368704).

123745020 is an abundant number, since it is smaller than the sum of its proper divisors (282992388).

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

123745020 is a wasteful number, since it uses less digits than its factorization.

123745020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8019 (or 8017 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 123745020 is about 11124.0738940372. The cubic root of 123745020 is about 498.3210619778.

The spelling of 123745020 in words is "one hundred twenty-three million, seven hundred forty-five thousand, twenty".