1240254404 has 6 divisors (see below), whose sum is σ = 2170445214. Its totient is φ = 620127200.

The previous prime is 1240254403. The next prime is 1240254437. The reversal of 1240254404 is 4044520421.

It can be written as a sum of positive squares in only one way, i.e., 1239040000 + 1214404 = 35200^2 + 1102^2 .

It is not an unprimeable number, because it can be changed into a prime (1240254401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155031797 + ... + 155031804.

It is an arithmetic number, because the mean of its divisors is an integer number (361740869).

Almost surely, 2^1240254404 is an apocalyptic number.

It is an amenable number.

1240254404 is a deficient number, since it is larger than the sum of its proper divisors (930190810).

1240254404 is a wasteful number, since it uses less digits than its factorization.

1240254404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310063605 (or 310063603 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 1240254404 is about 35217.2458321204. The cubic root of 1240254404 is about 1074.4105379134.

Adding to 1240254404 its reverse (4044520421), we get a palindrome (5284774825).

The spelling of 1240254404 in words is "one billion, two hundred forty million, two hundred fifty-four thousand, four hundred four".