109567642 has 16 divisors (see below), whose sum is σ = 176268960. Its totient is φ = 50920272.

The previous prime is 109567639. The next prime is 109567649. The reversal of 109567642 is 246765901.

It is a junction number, because it is equal to n+sod(n) for n = 109567595 and 109567604.

It is not an unprimeable number, because it can be changed into a prime (109567649) 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, 25188 + ... + 29215.

It is an arithmetic number, because the mean of its divisors is an integer number (11016810).

Almost surely, 2^109567642 is an apocalyptic number.

109567642 is a deficient number, since it is larger than the sum of its proper divisors (66701318).

109567642 is a wasteful number, since it uses less digits than its factorization.

109567642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54477.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 109567642 is about 10467.4563290228. The cubic root of 109567642 is about 478.5134012153.

The spelling of 109567642 in words is "one hundred nine million, five hundred sixty-seven thousand, six hundred forty-two".