1356266042 has 4 divisors (see below), whose sum is σ = 2034399066. Its totient is φ = 678133020.

The previous prime is 1356266033. The next prime is 1356266071. The reversal of 1356266042 is 2406626531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2406626531 = 22271 ⋅108061.

It can be written as a sum of positive squares in only one way, i.e., 1303282201 + 52983841 = 36101^2 + 7279^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1356265993 and 1356266011.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339066509 + ... + 339066512.

Almost surely, 2^1356266042 is an apocalyptic number.

1356266042 is a deficient number, since it is larger than the sum of its proper divisors (678133024).

1356266042 is an equidigital number, since it uses as much as digits as its factorization.

1356266042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678133023.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 1356266042 is about 36827.5174563804. The cubic root of 1356266042 is about 1106.9167586708.

The spelling of 1356266042 in words is "one billion, three hundred fifty-six million, two hundred sixty-six thousand, forty-two".