161254542 has 16 divisors (see below), whose sum is σ = 322641792. Its totient is φ = 53729400.

The previous prime is 161254523. The next prime is 161254553. The reversal of 161254542 is 245452161.

161254542 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17917 + ... + 25367.

It is an arithmetic number, because the mean of its divisors is an integer number (20165112).

Almost surely, 2^161254542 is an apocalyptic number.

161254542 is an abundant number, since it is smaller than the sum of its proper divisors (161387250).

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

161254542 is a wasteful number, since it uses less digits than its factorization.

161254542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11063.

The product of its digits is 9600, while the sum is 30.

The square root of 161254542 is about 12698.6039390163. The cubic root of 161254542 is about 544.2987271314.

The spelling of 161254542 in words is "one hundred sixty-one million, two hundred fifty-four thousand, five hundred forty-two".