123704090 has 8 divisors (see below), whose sum is σ = 222667380. Its totient is φ = 49481632.

The previous prime is 123704083. The next prime is 123704099. The reversal of 123704090 is 90407321.

It can be written as a sum of positive squares in 2 ways, for example, as 117657409 + 6046681 = 10847^2 + 2459^2 .

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

It is not an unprimeable number, because it can be changed into a prime (123704099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6185195 + ... + 6185214.

Almost surely, 2^123704090 is an apocalyptic number.

123704090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123704090 is a deficient number, since it is larger than the sum of its proper divisors (98963290).

123704090 is a wasteful number, since it uses less digits than its factorization.

123704090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12370416.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 123704090 is about 11122.2340381778. The cubic root of 123704090 is about 498.2661142305.

The spelling of 123704090 in words is "one hundred twenty-three million, seven hundred four thousand, ninety".