123542012 has 24 divisors (see below), whose sum is σ = 236500992. Its totient is φ = 56001200.

The previous prime is 123541987. The next prime is 123542087. The reversal of 123542012 is 210245321.

It is a congruent number.

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, 13187 + ... + 20517.

It is an arithmetic number, because the mean of its divisors is an integer number (9854208).

Almost surely, 2^123542012 is an apocalyptic number.

It is an amenable number.

123542012 is a deficient number, since it is larger than the sum of its proper divisors (112958980).

123542012 is a wasteful number, since it uses less digits than its factorization.

123542012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7729 (or 7727 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 123542012 is about 11114.9454339641. The cubic root of 123542012 is about 498.0484084919.

Adding to 123542012 its reverse (210245321), we get a palindrome (333787333).

The spelling of 123542012 in words is "one hundred twenty-three million, five hundred forty-two thousand, twelve".