1254720019087 has 2 divisors, whose sum is σ = 1254720019088. Its totient is φ = 1254720019086.

The previous prime is 1254720019039. The next prime is 1254720019139. The reversal of 1254720019087 is 7809100274521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1254720019087 - 2¹⁵ = 1254719986319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1254720013087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627360009543 + 627360009544.

It is an arithmetic number, because the mean of its divisors is an integer number (627360009544).

Almost surely, 2^{1254720019087} is an apocalyptic number.

1254720019087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1254720019087 is an equidigital number, since it uses as much as digits as its factorization.

1254720019087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 282240, while the sum is 46.

The spelling of 1254720019087 in words is "one trillion, two hundred fifty-four billion, seven hundred twenty million, nineteen thousand, eighty-seven".