1017126775642 has 4 divisors (see below), whose sum is σ = 1525690163466. Its totient is φ = 508563387820.

The previous prime is 1017126775597. The next prime is 1017126775649. The reversal of 1017126775642 is 2465776217101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 749590592521 + 267536183121 = 865789^2 + 517239^2 .

It is not an unprimeable number, because it can be changed into a prime (1017126775649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254281693909 + ... + 254281693912.

Almost surely, 2^{1017126775642} is an apocalyptic number.

1017126775642 is a deficient number, since it is larger than the sum of its proper divisors (508563387824).

1017126775642 is an equidigital number, since it uses as much as digits as its factorization.

1017126775642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508563387823.

The product of its (nonzero) digits is 987840, while the sum is 49.

The spelling of 1017126775642 in words is "one trillion, seventeen billion, one hundred twenty-six million, seven hundred seventy-five thousand, six hundred forty-two".