1240104321 has 48 divisors (see below), whose sum is σ = 1956240000. Its totient is φ = 753836544.

The previous prime is 1240104311. The next prime is 1240104329. The reversal of 1240104321 is 1234010421.

1240104321 is a `hidden beast` number, since 1 + 240 + 104 + 321 = 666.

It is not a de Polignac number, because 1240104321 - 2⁵ = 1240104289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1240104294 and 1240104303.

It is not an unprimeable number, because it can be changed into a prime (1240104329) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2484930 + ... + 2485428.

It is an arithmetic number, because the mean of its divisors is an integer number (40755000).

Almost surely, 2^1240104321 is an apocalyptic number.

It is an amenable number.

1240104321 is a deficient number, since it is larger than the sum of its proper divisors (716135679).

1240104321 is a wasteful number, since it uses less digits than its factorization.

1240104321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998 (or 995 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1240104321 is about 35215.1149508276. The cubic root of 1240104321 is about 1074.3671980790.

Adding to 1240104321 its reverse (1234010421), we get a palindrome (2474114742).

The spelling of 1240104321 in words is "one billion, two hundred forty million, one hundred four thousand, three hundred twenty-one".