161647342 has 4 divisors (see below), whose sum is σ = 242471016. Its totient is φ = 80823670.

The previous prime is 161647337. The next prime is 161647393. The reversal of 161647342 is 243746161.

161647342 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×161647342² = 52259726351329928, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161647298 and 161647307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40411834 + ... + 40411837.

It is an arithmetic number, because the mean of its divisors is an integer number (60617754).

Almost surely, 2^161647342 is an apocalyptic number.

161647342 is a deficient number, since it is larger than the sum of its proper divisors (80823674).

161647342 is an equidigital number, since it uses as much as digits as its factorization.

161647342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80823673.

The product of its digits is 24192, while the sum is 34.

The square root of 161647342 is about 12714.0607989737. The cubic root of 161647342 is about 544.7403212574.

The spelling of 161647342 in words is "one hundred sixty-one million, six hundred forty-seven thousand, three hundred forty-two".