123729630 has 16 divisors (see below), whose sum is σ = 296951184. Its totient is φ = 32994560.

The previous prime is 123729629. The next prime is 123729647. The reversal of 123729630 is 36927321.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 123729591 and 123729600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2062131 + ... + 2062190.

It is an arithmetic number, because the mean of its divisors is an integer number (18559449).

Almost surely, 2^123729630 is an apocalyptic number.

123729630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123729630 is an abundant number, since it is smaller than the sum of its proper divisors (173221554).

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

123729630 is a wasteful number, since it uses less digits than its factorization.

123729630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4124331.

The product of its (nonzero) digits is 13608, while the sum is 33.

The square root of 123729630 is about 11123.3821295503. The cubic root of 123729630 is about 498.3004026168.

The spelling of 123729630 in words is "one hundred twenty-three million, seven hundred twenty-nine thousand, six hundred thirty".