123420730 has 8 divisors (see below), whose sum is σ = 222157332. Its totient is φ = 49368288.

The previous prime is 123420727. The next prime is 123420761. The reversal of 123420730 is 37024321.

It can be written as a sum of positive squares in 2 ways, for example, as 122699929 + 720801 = 11077^2 + 849^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6171027 + ... + 6171046.

Almost surely, 2^123420730 is an apocalyptic number.

123420730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123420730 is a deficient number, since it is larger than the sum of its proper divisors (98736602).

123420730 is a wasteful number, since it uses less digits than its factorization.

123420730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12342080.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 123420730 is about 11109.4882870454. The cubic root of 123420730 is about 497.8853760052.

The spelling of 123420730 in words is "one hundred twenty-three million, four hundred twenty thousand, seven hundred thirty".