1240030407 has 64 divisors (see below), whose sum is σ = 2134425600. Its totient is φ = 634687200.

The previous prime is 1240030391. The next prime is 1240030417. The reversal of 1240030407 is 7040300421.

It is not a de Polignac number, because 1240030407 - 2⁴ = 1240030391 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240030417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 802878 + ... + 804420.

It is an arithmetic number, because the mean of its divisors is an integer number (33350400).

Almost surely, 2^1240030407 is an apocalyptic number.

1240030407 is a deficient number, since it is larger than the sum of its proper divisors (894395193).

1240030407 is a wasteful number, since it uses less digits than its factorization.

1240030407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1649 (or 1635 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 1240030407 is about 35214.0654710586. The cubic root of 1240030407 is about 1074.3458524675.

Adding to 1240030407 its reverse (7040300421), we get a palindrome (8280330828).

The spelling of 1240030407 in words is "one billion, two hundred forty million, thirty thousand, four hundred seven".