161042454 has 24 divisors (see below), whose sum is σ = 349310520. Its totient is φ = 53621568.

The previous prime is 161042449. The next prime is 161042503. The reversal of 161042454 is 454240161.

161042454 is a `hidden beast` number, since 1 + 610 + 4 + 2 + 45 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13729 + ... + 22595.

It is an arithmetic number, because the mean of its divisors is an integer number (14554605).

Almost surely, 2^161042454 is an apocalyptic number.

161042454 is an abundant number, since it is smaller than the sum of its proper divisors (188268066).

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

161042454 is a wasteful number, since it uses less digits than its factorization.

161042454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9884 (or 9881 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 161042454 is about 12690.2503521404. The cubic root of 161042454 is about 544.0599950953.

The spelling of 161042454 in words is "one hundred sixty-one million, forty-two thousand, four hundred fifty-four".