122543930 has 16 divisors (see below), whose sum is σ = 227695104. Its totient is φ = 47436240.

The previous prime is 122543923. The next prime is 122543933. The reversal of 122543930 is 39345221.

It is a junction number, because it is equal to n+sod(n) for n = 122543893 and 122543902.

It is not an unprimeable number, because it can be changed into a prime (122543933) 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, 197342 + ... + 197961.

It is an arithmetic number, because the mean of its divisors is an integer number (14230944).

Almost surely, 2^122543930 is an apocalyptic number.

122543930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122543930 is a deficient number, since it is larger than the sum of its proper divisors (105151174).

122543930 is a wasteful number, since it uses less digits than its factorization.

122543930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395341.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 122543930 is about 11069.9561878085. The cubic root of 122543930 is about 496.7035546575.

The spelling of 122543930 in words is "one hundred twenty-two million, five hundred forty-three thousand, nine hundred thirty".