161342270 has 16 divisors (see below), whose sum is σ = 291625488. Its totient is φ = 64268160.

The previous prime is 161342261. The next prime is 161342299. The reversal of 161342270 is 72243161.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31064 + ... + 35883.

It is an arithmetic number, because the mean of its divisors is an integer number (18226593).

Almost surely, 2^161342270 is an apocalyptic number.

161342270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161342270 is a deficient number, since it is larger than the sum of its proper divisors (130283218).

161342270 is a wasteful number, since it uses less digits than its factorization.

161342270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67195.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 161342270 is about 12702.0577073166. The cubic root of 161342270 is about 544.3974149606.

The spelling of 161342270 in words is "one hundred sixty-one million, three hundred forty-two thousand, two hundred seventy".