1240353133 has 8 divisors (see below), whose sum is σ = 1315278648. Its totient is φ = 1165645824.

The previous prime is 1240353067. The next prime is 1240353143. The reversal of 1240353133 is 3313530421.

It can be written as a sum of positive squares in 4 ways, for example, as 90668484 + 1149684649 = 9522^2 + 33907^2 .

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 1240353133 - 2⁹ = 1240352621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1240353098 and 1240353107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240353143) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 42766 + ... + 65647.

It is an arithmetic number, because the mean of its divisors is an integer number (164409831).

Almost surely, 2^1240353133 is an apocalyptic number.

It is an amenable number.

1240353133 is a deficient number, since it is larger than the sum of its proper divisors (74925515).

1240353133 is a wasteful number, since it uses less digits than its factorization.

1240353133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109103.

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 1240353133 is about 35218.6475180408. The cubic root of 1240353133 is about 1074.4390462213.

Adding to 1240353133 its reverse (3313530421), we get a palindrome (4553883554).

It can be divided in two parts, 12403 and 53133, that added together give a 16-th power (65536 = 2¹⁶).

The spelling of 1240353133 in words is "one billion, two hundred forty million, three hundred fifty-three thousand, one hundred thirty-three".