1240402224 has 40 divisors (see below), whose sum is σ = 3210856000. Its totient is φ = 412630848.

The previous prime is 1240402217. The next prime is 1240402237. The reversal of 1240402224 is 4222040421.

It is a self number, because there is not a number n which added to its sum of digits gives 1240402224.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1942 + ... + 49845.

It is an arithmetic number, because the mean of its divisors is an integer number (80271400).

Almost surely, 2^1240402224 is an apocalyptic number.

It is an amenable number.

1240402224 is an abundant number, since it is smaller than the sum of its proper divisors (1970453776).

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

1240402224 is a wasteful number, since it uses less digits than its factorization.

1240402224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52297 (or 52291 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 1240402224 is about 35219.3444572723. The cubic root of 1240402224 is about 1074.4532208382.

Adding to 1240402224 its reverse (4222040421), we get a palindrome (5462442645).

The spelling of 1240402224 in words is "one billion, two hundred forty million, four hundred two thousand, two hundred twenty-four".