1240046261 has 8 divisors (see below), whose sum is σ = 1267532544. Its totient is φ = 1212606000.

The previous prime is 1240046243. The next prime is 1240046273. The reversal of 1240046261 is 1626400421.

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 1240046261 - 2²² = 1235851957 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1240046261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240046281) 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, 46136 + ... + 67886.

It is an arithmetic number, because the mean of its divisors is an integer number (158441568).

Almost surely, 2^1240046261 is an apocalyptic number.

It is an amenable number.

1240046261 is a deficient number, since it is larger than the sum of its proper divisors (27486283).

1240046261 is a wasteful number, since it uses less digits than its factorization.

1240046261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23011.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 1240046261 is about 35214.2905792521. The cubic root of 1240046261 is about 1074.3504310129.

Adding to 1240046261 its reverse (1626400421), we get a palindrome (2866446682).

The spelling of 1240046261 in words is "one billion, two hundred forty million, forty-six thousand, two hundred sixty-one".