1121253761 has 8 divisors (see below), whose sum is σ = 1147150080. Its totient is φ = 1095442528.

The previous prime is 1121253737. The next prime is 1121253769. The reversal of 1121253761 is 1673521211.

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 1121253761 - 2⁶ = 1121253697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121253769) 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, 5780 + ... + 47706.

It is an arithmetic number, because the mean of its divisors is an integer number (143393760).

Almost surely, 2^1121253761 is an apocalyptic number.

It is an amenable number.

1121253761 is a deficient number, since it is larger than the sum of its proper divisors (25896319).

1121253761 is an equidigital number, since it uses as much as digits as its factorization.

1121253761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42543.

The product of its digits is 2520, while the sum is 29.

The square root of 1121253761 is about 33485.1274598142. The cubic root of 1121253761 is about 1038.8861845899.

Adding to 1121253761 its reverse (1673521211), we get a palindrome (2794774972).

The spelling of 1121253761 in words is "one billion, one hundred twenty-one million, two hundred fifty-three thousand, seven hundred sixty-one".