109776642 has 32 divisors (see below), whose sum is σ = 238571520. Its totient is φ = 33546960.

The previous prime is 109776587. The next prime is 109776649. The reversal of 109776642 is 246677901.

It is a super-4 number, since 4×109776642⁴ (a number of 33 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 109776594 and 109776603.

It is not an unprimeable number, because it can be changed into a prime (109776649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11998 + ... + 19065.

It is an arithmetic number, because the mean of its divisors is an integer number (7455360).

Almost surely, 2^109776642 is an apocalyptic number.

109776642 is an abundant number, since it is smaller than the sum of its proper divisors (128794878).

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

109776642 is a wasteful number, since it uses less digits than its factorization.

109776642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31118.

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 109776642 is about 10477.4348960039. The cubic root of 109776642 is about 478.8174623327.

The spelling of 109776642 in words is "one hundred nine million, seven hundred seventy-six thousand, six hundred forty-two".