123996542 has 24 divisors (see below), whose sum is σ = 195655824. Its totient is φ = 58930784.

The previous prime is 123996541. The next prime is 123996571. The reversal of 123996542 is 245699321.

It is a self number, because there is not a number n which added to its sum of digits gives 123996542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123996541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 246263 + ... + 246765.

It is an arithmetic number, because the mean of its divisors is an integer number (8152326).

Almost surely, 2^123996542 is an apocalyptic number.

123996542 is a deficient number, since it is larger than the sum of its proper divisors (71659282).

123996542 is a wasteful number, since it uses less digits than its factorization.

123996542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784 (or 761 counting only the distinct ones).

The product of its digits is 116640, while the sum is 41.

The square root of 123996542 is about 11135.3734557939. The cubic root of 123996542 is about 498.6584597588.

The spelling of 123996542 in words is "one hundred twenty-three million, nine hundred ninety-six thousand, five hundred forty-two".