123564530 has 16 divisors (see below), whose sum is σ = 222571584. Its totient is φ = 49391280.

The previous prime is 123564527. The next prime is 123564557. The reversal of 123564530 is 35465321.

It is a junction number, because it is equal to n+sod(n) for n = 123564493 and 123564502.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 14699 + ... + 21521.

It is an arithmetic number, because the mean of its divisors is an integer number (13910724).

Almost surely, 2^123564530 is an apocalyptic number.

123564530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123564530 is a deficient number, since it is larger than the sum of its proper divisors (99007054).

123564530 is a wasteful number, since it uses less digits than its factorization.

123564530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8641.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 123564530 is about 11115.9583482487. The cubic root of 123564530 is about 498.0786664113.

The spelling of 123564530 in words is "one hundred twenty-three million, five hundred sixty-four thousand, five hundred thirty".