123122790 has 72 divisors (see below), whose sum is σ = 372396960. Its totient is φ = 28141344.

The previous prime is 123122771. The next prime is 123122819. The reversal of 123122790 is 97221321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9550 + ... + 18369.

It is an arithmetic number, because the mean of its divisors is an integer number (5172180).

Almost surely, 2^123122790 is an apocalyptic number.

123122790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123122790 is an abundant number, since it is smaller than the sum of its proper divisors (249274170).

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

123122790 is a wasteful number, since it uses less digits than its factorization.

123122790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27946 (or 27936 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 123122790 is about 11096.0709262333. The cubic root of 123122790 is about 497.4844182556.

The spelling of 123122790 in words is "one hundred twenty-three million, one hundred twenty-two thousand, seven hundred ninety".