1240424109 has 24 divisors (see below), whose sum is σ = 1893315840. Its totient is φ = 780972192.

The previous prime is 1240424089. The next prime is 1240424117. The reversal of 1240424109 is 9014240421.

It is a happy number.

1240424109 is a `hidden beast` number, since 1 + 240 + 4 + 2 + 410 + 9 = 666.

It is not a de Polignac number, because 1240424109 - 2⁷ = 1240423981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240424189) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21574 + ... + 54279.

It is an arithmetic number, because the mean of its divisors is an integer number (78888160).

Almost surely, 2^1240424109 is an apocalyptic number.

It is an amenable number.

1240424109 is a deficient number, since it is larger than the sum of its proper divisors (652891731).

1240424109 is a wasteful number, since it uses less digits than its factorization.

1240424109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75961 (or 75958 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1240424109 is about 35219.6551516337. The cubic root of 1240424109 is about 1074.4595398289.

The spelling of 1240424109 in words is "one billion, two hundred forty million, four hundred twenty-four thousand, one hundred nine".