123987692 has 48 divisors (see below), whose sum is σ = 236221440. Its totient is φ = 56754432.

The previous prime is 123987691. The next prime is 123987697. The reversal of 123987692 is 296789321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is not an unprimeable number, because it can be changed into a prime (123987691) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 367748 + ... + 368084.

It is an arithmetic number, because the mean of its divisors is an integer number (4921280).

Almost surely, 2^123987692 is an apocalyptic number.

It is an amenable number.

123987692 is a deficient number, since it is larger than the sum of its proper divisors (112233748).

123987692 is a wasteful number, since it uses less digits than its factorization.

123987692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510 (or 508 counting only the distinct ones).

The product of its digits is 326592, while the sum is 47.

The square root of 123987692 is about 11134.9760664314. The cubic root of 123987692 is about 498.6465959001.

The spelling of 123987692 in words is "one hundred twenty-three million, nine hundred eighty-seven thousand, six hundred ninety-two".