161345242 has 8 divisors (see below), whose sum is σ = 244159956. Its totient is φ = 79958592.

The previous prime is 161345237. The next prime is 161345243. The reversal of 161345242 is 242543161.

It can be written as a sum of positive squares in 2 ways, for example, as 132733441 + 28611801 = 11521^2 + 5349^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 161345242.

It is not an unprimeable number, because it can be changed into a prime (161345243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356733 + ... + 357184.

Almost surely, 2^161345242 is an apocalyptic number.

161345242 is a deficient number, since it is larger than the sum of its proper divisors (82814714).

161345242 is a wasteful number, since it uses less digits than its factorization.

161345242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714032.

The product of its digits is 5760, while the sum is 28.

The square root of 161345242 is about 12702.1746956968. The cubic root of 161345242 is about 544.4007576250.

The spelling of 161345242 in words is "one hundred sixty-one million, three hundred forty-five thousand, two hundred forty-two".