1235120445 has 90 divisors (see below), whose sum is σ = 2396504214. Its totient is φ = 588444480.

The previous prime is 1235120437. The next prime is 1235120521. The reversal of 1235120445 is 5440215321.

It can be written as a sum of positive squares in 5 ways, for example, as 1108490436 + 126630009 = 33294^2 + 11253^2 .

It is not a de Polignac number, because 1235120445 - 2³ = 1235120437 is a prime.

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 89 ways as a sum of consecutive naturals, for example, 39842580 + ... + 39842610.

Almost surely, 2^1235120445 is an apocalyptic number.

1235120445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1235120445 is a deficient number, since it is larger than the sum of its proper divisors (1161383769).

1235120445 is an frugal number, since it uses more digits than its factorization.

1235120445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125 (or 52 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 1235120445 is about 35144.2804023642. The cubic root of 1235120445 is about 1072.9260015669.

Adding to 1235120445 its reverse (5440215321), we get a palindrome (6675335766).

The spelling of 1235120445 in words is "one billion, two hundred thirty-five million, one hundred twenty thousand, four hundred forty-five".