1240401444 has 12 divisors (see below), whose sum is σ = 2894270064. Its totient is φ = 413467144.

The previous prime is 1240401439. The next prime is 1240401457. The reversal of 1240401444 is 4441040421.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51683382 + ... + 51683405.

It is an arithmetic number, because the mean of its divisors is an integer number (241189172).

Almost surely, 2^1240401444 is an apocalyptic number.

It is an amenable number.

1240401444 is an abundant number, since it is smaller than the sum of its proper divisors (1653868620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1240401444 is a wasteful number, since it uses less digits than its factorization.

1240401444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103366794 (or 103366792 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 1240401444 is about 35219.3333838107. Note that the first 4 decimals coincide. The cubic root of 1240401444 is about 1074.4529956226.

Adding to 1240401444 its reverse (4441040421), we get a palindrome (5681441865).

The spelling of 1240401444 in words is "one billion, two hundred forty million, four hundred one thousand, four hundred forty-four".