161102340 has 72 divisors (see below), whose sum is σ = 558492480. Its totient is φ = 36823104.

The previous prime is 161102339. The next prime is 161102341. The reversal of 161102340 is 43201161.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (161102339) and next prime (161102341).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (161102341) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 62670 + ... + 65189.

It is an arithmetic number, because the mean of its divisors is an integer number (7756840).

Almost surely, 2^161102340 is an apocalyptic number.

161102340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161102340 is an abundant number, since it is smaller than the sum of its proper divisors (397390140).

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

161102340 is a wasteful number, since it uses less digits than its factorization.

161102340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127881 (or 127876 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 161102340 is about 12692.6096607435. The cubic root of 161102340 is about 544.1274256356.

The spelling of 161102340 in words is "one hundred sixty-one million, one hundred two thousand, three hundred forty".