161142354 has 36 divisors (see below), whose sum is σ = 370899594. Its totient is φ = 50552832.

The previous prime is 161142353. The next prime is 161142361. The reversal of 161142354 is 453241161.

It is a happy number.

161142354 is a `hidden beast` number, since 1 + 611 + 42 + 3 + 5 + 4 = 666.

161142354 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 147987225 + 13155129 = 12165^2 + 3627^2 .

It is a super-2 number, since 2×161142354² = 51933716505322632, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (161142353) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 10287 + ... + 20690.

Almost surely, 2^161142354 is an apocalyptic number.

161142354 is an abundant number, since it is smaller than the sum of its proper divisors (209757240).

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

161142354 is a wasteful number, since it uses less digits than its factorization.

161142354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31019 (or 30999 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 161142354 is about 12694.1858344677. The cubic root of 161142354 is about 544.1724713551.

The spelling of 161142354 in words is "one hundred sixty-one million, one hundred forty-two thousand, three hundred fifty-four".