1181867212542 has 16 divisors (see below), whose sum is σ = 2364078623760. Its totient is φ = 393898371072.

The previous prime is 1181867212531. The next prime is 1181867212601. The reversal of 1181867212542 is 2452127681811.

It is a junction number, because it is equal to n+sod(n) for n = 1181867212491 and 1181867212500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14296963 + ... + 14379390.

It is an arithmetic number, because the mean of its divisors is an integer number (147754913985).

Almost surely, 2^{1181867212542} is an apocalyptic number.

1181867212542 is an abundant number, since it is smaller than the sum of its proper divisors (1182211411218).

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

1181867212542 is a wasteful number, since it uses less digits than its factorization.

1181867212542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28683227.

The product of its digits is 430080, while the sum is 48.

The spelling of 1181867212542 in words is "one trillion, one hundred eighty-one billion, eight hundred sixty-seven million, two hundred twelve thousand, five hundred forty-two".