109019542 has 4 divisors (see below), whose sum is σ = 163529316. Its totient is φ = 54509770.

The previous prime is 109019527. The next prime is 109019543. The reversal of 109019542 is 245910901.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109019543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27254884 + ... + 27254887.

It is an arithmetic number, because the mean of its divisors is an integer number (40882329).

Almost surely, 2^109019542 is an apocalyptic number.

109019542 is a deficient number, since it is larger than the sum of its proper divisors (54509774).

109019542 is an equidigital number, since it uses as much as digits as its factorization.

109019542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54509773.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 109019542 is about 10441.2423590299. The cubic root of 109019542 is about 477.7141635914.

It can be divided in two parts, 109019 and 542, that added together give a square (109561 = 331²).

The spelling of 109019542 in words is "one hundred nine million, nineteen thousand, five hundred forty-two".