1240546429439 has 2 divisors, whose sum is σ = 1240546429440. Its totient is φ = 1240546429438.

The previous prime is 1240546429429. The next prime is 1240546429469. The reversal of 1240546429439 is 9349246450421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1240546429439 - 2¹² = 1240546425343 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1240546429429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620273214719 + 620273214720.

It is an arithmetic number, because the mean of its divisors is an integer number (620273214720).

Almost surely, 2^{1240546429439} is an apocalyptic number.

1240546429439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240546429439 is an equidigital number, since it uses as much as digits as its factorization.

1240546429439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7464960, while the sum is 53.

The spelling of 1240546429439 in words is "one trillion, two hundred forty billion, five hundred forty-six million, four hundred twenty-nine thousand, four hundred thirty-nine".