109861642 has 32 divisors (see below), whose sum is σ = 185137344. Its totient is φ = 48470400.

The previous prime is 109861627. The next prime is 109861643. The reversal of 109861642 is 246168901.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (109861643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107092 + ... + 108112.

It is an arithmetic number, because the mean of its divisors is an integer number (5785542).

Almost surely, 2^109861642 is an apocalyptic number.

109861642 is a deficient number, since it is larger than the sum of its proper divisors (75275702).

109861642 is a wasteful number, since it uses less digits than its factorization.

109861642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 109861642 is about 10481.4904474507. The cubic root of 109861642 is about 478.9410131584.

The spelling of 109861642 in words is "one hundred nine million, eight hundred sixty-one thousand, six hundred forty-two".