1281613070842 has 32 divisors (see below), whose sum is σ = 2216197771200. Its totient is φ = 550883420928.

The previous prime is 1281613070831. The next prime is 1281613070849. The reversal of 1281613070842 is 2480703161821.

It is a super-2 number, since 2×1281613070842² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1281613070849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21956943 + ... + 22015234.

It is an arithmetic number, because the mean of its divisors is an integer number (69256180350).

Almost surely, 2^{1281613070842} is an apocalyptic number.

1281613070842 is a deficient number, since it is larger than the sum of its proper divisors (934584700358).

1281613070842 is a wasteful number, since it uses less digits than its factorization.

1281613070842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43972270.

The product of its (nonzero) digits is 129024, while the sum is 43.

The spelling of 1281613070842 in words is "one trillion, two hundred eighty-one billion, six hundred thirteen million, seventy thousand, eight hundred forty-two".