1242810022857 has 8 divisors (see below), whose sum is σ = 1784547725184. Its totient is φ = 764806167888.

The previous prime is 1242810022823. The next prime is 1242810022907. The reversal of 1242810022857 is 7582200182421.

It is a happy number.

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

It is not a de Polignac number, because 1242810022857 - 2¹⁵ = 1242809990089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1242810022357) 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, 15933461793 + ... + 15933461870.

It is an arithmetic number, because the mean of its divisors is an integer number (223068465648).

Almost surely, 2^{1242810022857} is an apocalyptic number.

It is an amenable number.

1242810022857 is a deficient number, since it is larger than the sum of its proper divisors (541737702327).

1242810022857 is a wasteful number, since it uses less digits than its factorization.

1242810022857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31866923679.

The product of its (nonzero) digits is 143360, while the sum is 42.

The spelling of 1242810022857 in words is "one trillion, two hundred forty-two billion, eight hundred ten million, twenty-two thousand, eight hundred fifty-seven".