161576742 has 16 divisors (see below), whose sum is σ = 323516160. Its totient is φ = 53798472.

The previous prime is 161576717. The next prime is 161576747. The reversal of 161576742 is 247675161.

161576742 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×161576742³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 161576742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161576747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9138 + ... + 20165.

It is an arithmetic number, because the mean of its divisors is an integer number (20219760).

Almost surely, 2^161576742 is an apocalyptic number.

161576742 is an abundant number, since it is smaller than the sum of its proper divisors (161939418).

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

161576742 is a wasteful number, since it uses less digits than its factorization.

161576742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30227.

The product of its digits is 70560, while the sum is 39.

The square root of 161576742 is about 12711.2840421415. The cubic root of 161576742 is about 544.6610040093.

The spelling of 161576742 in words is "one hundred sixty-one million, five hundred seventy-six thousand, seven hundred forty-two".