1109405742 has 32 divisors (see below), whose sum is σ = 2295168000. Its totient is φ = 357125760.

The previous prime is 1109405741. The next prime is 1109405753. The reversal of 1109405742 is 2475049011.

It is a happy number.

It is a super-2 number, since 2×1109405742² = 2461562200765141128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1109405741) 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, 86838 + ... + 98790.

It is an arithmetic number, because the mean of its divisors is an integer number (71724000).

Almost surely, 2^1109405742 is an apocalyptic number.

1109405742 is an abundant number, since it is smaller than the sum of its proper divisors (1185762258).

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

1109405742 is a wasteful number, since it uses less digits than its factorization.

1109405742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12488.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 1109405742 is about 33307.7429736691. The cubic root of 1109405742 is about 1035.2139994848.

The spelling of 1109405742 in words is "one billion, one hundred nine million, four hundred five thousand, seven hundred forty-two".