123561852 has 12 divisors (see below), whose sum is σ = 288311016. Its totient is φ = 41187280.

The previous prime is 123561839. The next prime is 123561859. The reversal of 123561852 is 258165321.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123561859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5148399 + ... + 5148422.

It is an arithmetic number, because the mean of its divisors is an integer number (24025918).

Almost surely, 2^123561852 is an apocalyptic number.

123561852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123561852 is an abundant number, since it is smaller than the sum of its proper divisors (164749164).

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

123561852 is a wasteful number, since it uses less digits than its factorization.

123561852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10296828 (or 10296826 counting only the distinct ones).

The product of its digits is 14400, while the sum is 33.

The square root of 123561852 is about 11115.8378901458. The cubic root of 123561852 is about 498.0750681179.

The spelling of 123561852 in words is "one hundred twenty-three million, five hundred sixty-one thousand, eight hundred fifty-two".