1240725136087 has 2 divisors, whose sum is σ = 1240725136088. Its totient is φ = 1240725136086.

The previous prime is 1240725136081. The next prime is 1240725136099. The reversal of 1240725136087 is 7806315270421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1240725136087 - 2¹⁹ = 1240724611799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1240725136081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620362568043 + 620362568044.

It is an arithmetic number, because the mean of its divisors is an integer number (620362568044).

Almost surely, 2^{1240725136087} is an apocalyptic number.

1240725136087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240725136087 is an equidigital number, since it uses as much as digits as its factorization.

1240725136087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 564480, while the sum is 46.

The spelling of 1240725136087 in words is "one trillion, two hundred forty billion, seven hundred twenty-five million, one hundred thirty-six thousand, eighty-seven".