1296155142309 has 8 divisors (see below), whose sum is σ = 1729603956640. Its totient is φ = 863404878096.

The previous prime is 1296155142277. The next prime is 1296155142341. The reversal of 1296155142309 is 9032415516921.

It is an interprime number because it is at equal distance from previous prime (1296155142277) and next prime (1296155142341).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1296155142309 - 2⁵ = 1296155142277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1296155142409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174633199 + ... + 174640620.

It is an arithmetic number, because the mean of its divisors is an integer number (216200494580).

Almost surely, 2^{1296155142309} is an apocalyptic number.

It is an amenable number.

1296155142309 is a deficient number, since it is larger than the sum of its proper divisors (433448814331).

1296155142309 is a wasteful number, since it uses less digits than its factorization.

1296155142309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349275059.

The product of its (nonzero) digits is 583200, while the sum is 48.

The spelling of 1296155142309 in words is "one trillion, two hundred ninety-six billion, one hundred fifty-five million, one hundred forty-two thousand, three hundred nine".