1240244433 has 16 divisors (see below), whose sum is σ = 1917287040. Its totient is φ = 790880112.

The previous prime is 1240244417. The next prime is 1240244443. The reversal of 1240244433 is 3344420421.

It is a happy number.

It is not a de Polignac number, because 1240244433 - 2⁴ = 1240244417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1240244397 and 1240244406.

It is not an unprimeable number, because it can be changed into a prime (1240244443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 997966 + ... + 999207.

It is an arithmetic number, because the mean of its divisors is an integer number (119830440).

Almost surely, 2^1240244433 is an apocalyptic number.

It is an amenable number.

1240244433 is a deficient number, since it is larger than the sum of its proper divisors (677042607).

1240244433 is a wasteful number, since it uses less digits than its factorization.

1240244433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1997205 (or 1997199 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 1240244433 is about 35217.1042676708. The cubic root of 1240244433 is about 1074.4076586718.

Adding to 1240244433 its reverse (3344420421), we get a palindrome (4584664854).

The spelling of 1240244433 in words is "one billion, two hundred forty million, two hundred forty-four thousand, four hundred thirty-three".