123489430 has 16 divisors (see below), whose sum is σ = 229451904. Its totient is φ = 47802240.

The previous prime is 123489427. The next prime is 123489433. The reversal of 123489430 is 34984321.

It is an interprime number because it is at equal distance from previous prime (123489427) and next prime (123489433).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123489433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198867 + ... + 199486.

It is an arithmetic number, because the mean of its divisors is an integer number (14340744).

Almost surely, 2^123489430 is an apocalyptic number.

123489430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123489430 is a deficient number, since it is larger than the sum of its proper divisors (105962474).

123489430 is a wasteful number, since it uses less digits than its factorization.

123489430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398391.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 123489430 is about 11112.5798084873. The cubic root of 123489430 is about 497.9777386112.

The spelling of 123489430 in words is "one hundred twenty-three million, four hundred eighty-nine thousand, four hundred thirty".