1240331121 has 6 divisors (see below), whose sum is σ = 1791589410. Its totient is φ = 826887408.

The previous prime is 1240331089. The next prime is 1240331137. The reversal of 1240331121 is 1211330421.

It can be written as a sum of positive squares in only one way, i.e., 1112889600 + 127441521 = 33360^2 + 11289^2 .

It is not a de Polignac number, because 1240331121 - 2⁵ = 1240331089 is a prime.

It is a super-2 number, since 2×1240331121² = 3076842579442233282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1240331094 and 1240331103.

It is not an unprimeable number, because it can be changed into a prime (1240331161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68907276 + ... + 68907293.

It is an arithmetic number, because the mean of its divisors is an integer number (298598235).

Almost surely, 2^1240331121 is an apocalyptic number.

It is an amenable number.

1240331121 is a deficient number, since it is larger than the sum of its proper divisors (551258289).

1240331121 is a wasteful number, since it uses less digits than its factorization.

1240331121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137814575 (or 137814572 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1240331121 is about 35218.3350117520. The cubic root of 1240331121 is about 1074.4326903184.

Adding to 1240331121 its reverse (1211330421), we get a palindrome (2451661542).

It can be divided in two parts, 1240331 and 121, that multiplied together give a palindrome (150080051).

The spelling of 1240331121 in words is "one billion, two hundred forty million, three hundred thirty-one thousand, one hundred twenty-one".