1090121747 has 8 divisors (see below), whose sum is σ = 1280702640. Its totient is φ = 914787360.

The previous prime is 1090121743. The next prime is 1090121749. The reversal of 1090121747 is 7471210901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1090121747 - 2² = 1090121743 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1090121743) 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, 3811472 + ... + 3811757.

It is an arithmetic number, because the mean of its divisors is an integer number (160087830).

Almost surely, 2^1090121747 is an apocalyptic number.

1090121747 is a deficient number, since it is larger than the sum of its proper divisors (190580893).

1090121747 is a wasteful number, since it uses less digits than its factorization.

1090121747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7623253.

The product of its (nonzero) digits is 3528, while the sum is 32.

The square root of 1090121747 is about 33016.9917921061. The cubic root of 1090121747 is about 1029.1807816612.

The spelling of 1090121747 in words is "one billion, ninety million, one hundred twenty-one thousand, seven hundred forty-seven".