1172235045 has 16 divisors (see below), whose sum is σ = 1877639040. Its totient is φ = 624504384.

The previous prime is 1172235007. The next prime is 1172235061. The reversal of 1172235045 is 5405322711.

It is not a de Polignac number, because 1172235045 - 2⁶ = 1172234981 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28734 + ... + 56303.

It is an arithmetic number, because the mean of its divisors is an integer number (117352440).

Almost surely, 2^1172235045 is an apocalyptic number.

1172235045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1172235045 is a deficient number, since it is larger than the sum of its proper divisors (705403995).

1172235045 is an equidigital number, since it uses as much as digits as its factorization.

1172235045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85964.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 1172235045 is about 34237.9182340282. The cubic root of 1172235045 is about 1054.3987934474.

Adding to 1172235045 its reverse (5405322711), we get a palindrome (6577557756).

The spelling of 1172235045 in words is "one billion, one hundred seventy-two million, two hundred thirty-five thousand, forty-five".