109668442 has 16 divisors (see below), whose sum is σ = 177607080. Its totient is φ = 50487552.

The previous prime is 109668413. The next prime is 109668451. The reversal of 109668442 is 244866901.

It can be written as a sum of positive squares in 4 ways, for example, as 93915481 + 15752961 = 9691^2 + 3969^2 .

It is a junction number, because it is equal to n+sod(n) for n = 109668395 and 109668404.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5478 + ... + 15790.

Almost surely, 2^109668442 is an apocalyptic number.

109668442 is a deficient number, since it is larger than the sum of its proper divisors (67938638).

109668442 is a wasteful number, since it uses less digits than its factorization.

109668442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10737.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 109668442 is about 10472.2701454842. The cubic root of 109668442 is about 478.6600971011.

The spelling of 109668442 in words is "one hundred nine million, six hundred sixty-eight thousand, four hundred forty-two".