1240429512541 has 2 divisors, whose sum is σ = 1240429512542. Its totient is φ = 1240429512540.

The previous prime is 1240429512503. The next prime is 1240429512571. The reversal of 1240429512541 is 1452159240421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 875890092100 + 364539420441 = 935890^2 + 603771^2 .

It is a cyclic number.

It is not a de Polignac number, because 1240429512541 - 2¹⁷ = 1240429381469 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1240429512494 and 1240429512503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1240429512571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620214756270 + 620214756271.

It is an arithmetic number, because the mean of its divisors is an integer number (620214756271).

Almost surely, 2^{1240429512541} is an apocalyptic number.

It is an amenable number.

1240429512541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240429512541 is an equidigital number, since it uses as much as digits as its factorization.

1240429512541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 1240429512541 in words is "one trillion, two hundred forty billion, four hundred twenty-nine million, five hundred twelve thousand, five hundred forty-one".