240474428009 has 2 divisors, whose sum is σ = 240474428010. Its totient is φ = 240474428008.

The previous prime is 240474427981. The next prime is 240474428011. The reversal of 240474428009 is 900824474042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 223279875625 + 17194552384 = 472525^2 + 131128^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240474428009 is a prime.

Together with 240474428011, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (240474928009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120237214004 + 120237214005.

It is an arithmetic number, because the mean of its divisors is an integer number (120237214005).

Almost surely, 2^240474428009 is an apocalyptic number.

It is an amenable number.

240474428009 is a deficient number, since it is larger than the sum of its proper divisors (1).

240474428009 is an equidigital number, since it uses as much as digits as its factorization.

240474428009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 516096, while the sum is 44.

The spelling of 240474428009 in words is "two hundred forty billion, four hundred seventy-four million, four hundred twenty-eight thousand, nine".