1240443101 has 16 divisors (see below), whose sum is σ = 1318800000. Its totient is φ = 1163455488.

The previous prime is 1240443079. The next prime is 1240443103. The reversal of 1240443101 is 1013440421.

It is a cyclic number.

It is not a de Polignac number, because 1240443101 - 2⁶ = 1240443037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240443103) 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 15 ways as a sum of consecutive naturals, for example, 992525 + ... + 993773.

It is an arithmetic number, because the mean of its divisors is an integer number (82425000).

Almost surely, 2^1240443101 is an apocalyptic number.

It is an amenable number.

1240443101 is a deficient number, since it is larger than the sum of its proper divisors (78356899).

1240443101 is a wasteful number, since it uses less digits than its factorization.

1240443101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1748.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1240443101 is about 35219.9247727760. The cubic root of 1240443101 is about 1074.4650234457.

Adding to 1240443101 its reverse (1013440421), we get a palindrome (2253883522).

The spelling of 1240443101 in words is "one billion, two hundred forty million, four hundred forty-three thousand, one hundred one".