161354120 has 16 divisors (see below), whose sum is σ = 363046860. Its totient is φ = 64541632.

The previous prime is 161354107. The next prime is 161354153. The reversal of 161354120 is 21453161.

It can be written as a sum of positive squares in 2 ways, for example, as 153412996 + 7941124 = 12386^2 + 2818^2 .

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 3 ways as a sum of consecutive naturals, for example, 2016887 + ... + 2016966.

Almost surely, 2^161354120 is an apocalyptic number.

161354120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161354120 is an abundant number, since it is smaller than the sum of its proper divisors (201692740).

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

161354120 is a wasteful number, since it uses less digits than its factorization.

161354120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4033864 (or 4033860 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 161354120 is about 12702.5241586072. The cubic root of 161354120 is about 544.4107426344.

The spelling of 161354120 in words is "one hundred sixty-one million, three hundred fifty-four thousand, one hundred twenty".