1173120541 has 4 divisors (see below), whose sum is σ = 1193004000. Its totient is φ = 1153237084.

The previous prime is 1173120527. The next prime is 1173120551. The reversal of 1173120541 is 1450213711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1173120541 - 2²¹ = 1171023389 is a prime.

It is a super-2 number, since 2×1173120541² = 2752423607432265362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1173120511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9941641 + ... + 9941758.

It is an arithmetic number, because the mean of its divisors is an integer number (298251000).

Almost surely, 2^1173120541 is an apocalyptic number.

It is an amenable number.

1173120541 is a deficient number, since it is larger than the sum of its proper divisors (19883459).

1173120541 is an equidigital number, since it uses as much as digits as its factorization.

1173120541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19883458.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 1173120541 is about 34250.8473033880. The cubic root of 1173120541 is about 1054.6642211368.

The spelling of 1173120541 in words is "one billion, one hundred seventy-three million, one hundred twenty thousand, five hundred forty-one".