1356136842 has 32 divisors (see below), whose sum is σ = 2733552000. Its totient is φ = 448512768.

The previous prime is 1356136781. The next prime is 1356136867. The reversal of 1356136842 is 2486316531.

It is a self number, because there is not a number n which added to its sum of digits gives 1356136842.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 486958 + ... + 489734.

It is an arithmetic number, because the mean of its divisors is an integer number (85423500).

Almost surely, 2^1356136842 is an apocalyptic number.

1356136842 is an abundant number, since it is smaller than the sum of its proper divisors (1377415158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1356136842 is a wasteful number, since it uses less digits than its factorization.

1356136842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3390.

The product of its digits is 103680, while the sum is 39.

The square root of 1356136842 is about 36825.7632914784. The cubic root of 1356136842 is about 1106.8816086873.

It can be divided in two parts, 13561 and 36842, that added together give a triangular number (50403 = T₃₁₇).

The spelling of 1356136842 in words is "one billion, three hundred fifty-six million, one hundred thirty-six thousand, eight hundred forty-two".