161365342 has 4 divisors (see below), whose sum is σ = 242048016. Its totient is φ = 80682670.

The previous prime is 161365339. The next prime is 161365427. The reversal of 161365342 is 243563161.

It is a semiprime because it is the product of two primes.

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 as a sum of consecutive naturals, namely, 40341334 + ... + 40341337.

It is an arithmetic number, because the mean of its divisors is an integer number (60512004).

Almost surely, 2^161365342 is an apocalyptic number.

161365342 is a deficient number, since it is larger than the sum of its proper divisors (80682674).

161365342 is an equidigital number, since it uses as much as digits as its factorization.

161365342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80682673.

The product of its digits is 12960, while the sum is 31.

The square root of 161365342 is about 12702.9658741571. The cubic root of 161365342 is about 544.4233633962.

The spelling of 161365342 in words is "one hundred sixty-one million, three hundred sixty-five thousand, three hundred forty-two".