1121138161542 has 48 divisors (see below), whose sum is σ = 2811292823040. Its totient is φ = 316270436976.

The previous prime is 1121138161531. The next prime is 1121138161571. The reversal of 1121138161542 is 2451618311211.

1121138161542 is a `hidden beast` number, since 1 + 1 + 2 + 1 + 1 + 38 + 1 + 615 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1121138161497 and 1121138161506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56306008 + ... + 56325915.

It is an arithmetic number, because the mean of its divisors is an integer number (58568600480).

Almost surely, 2^{1121138161542} is an apocalyptic number.

1121138161542 is an abundant number, since it is smaller than the sum of its proper divisors (1690154661498).

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

1121138161542 is a wasteful number, since it uses less digits than its factorization.

1121138161542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112632017 (or 112632014 counting only the distinct ones).

The product of its digits is 11520, while the sum is 36.

The spelling of 1121138161542 in words is "one trillion, one hundred twenty-one billion, one hundred thirty-eight million, one hundred sixty-one thousand, five hundred forty-two".