1020266226242 has 4 divisors (see below), whose sum is σ = 1530399339366. Its totient is φ = 510133113120.

The previous prime is 1020266226191. The next prime is 1020266226313. The reversal of 1020266226242 is 2426226620201.

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., 650795544961 + 369470681281 = 806719^2 + 607841^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255066556559 + ... + 255066556562.

Almost surely, 2^{1020266226242} is an apocalyptic number.

1020266226242 is a deficient number, since it is larger than the sum of its proper divisors (510133113124).

1020266226242 is an equidigital number, since it uses as much as digits as its factorization.

1020266226242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510133113123.

The product of its (nonzero) digits is 55296, while the sum is 35.

The spelling of 1020266226242 in words is "one trillion, twenty billion, two hundred sixty-six million, two hundred twenty-six thousand, two hundred forty-two".