122561830 has 16 divisors (see below), whose sum is σ = 228219120. Its totient is φ = 47334112.

The previous prime is 122561809. The next prime is 122561839. The reversal of 122561830 is 38165221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122561839) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 211024 + ... + 211603.

It is an arithmetic number, because the mean of its divisors is an integer number (14263695).

Almost surely, 2^122561830 is an apocalyptic number.

122561830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122561830 is a deficient number, since it is larger than the sum of its proper divisors (105657290).

122561830 is a wasteful number, since it uses less digits than its factorization.

122561830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422663.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 122561830 is about 11070.7646529045. The cubic root of 122561830 is about 496.7277379872.

The spelling of 122561830 in words is "one hundred twenty-two million, five hundred sixty-one thousand, eight hundred thirty".