161252942 has 8 divisors (see below), whose sum is σ = 242843832. Its totient is φ = 80305000.

The previous prime is 161252909. The next prime is 161252947. The reversal of 161252942 is 249252161.

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

It is a super-2 number, since 2×161252942² = 52005022607310728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161252899 and 161252908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161252947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160109 + ... + 161112.

It is an arithmetic number, because the mean of its divisors is an integer number (30355479).

Almost surely, 2^161252942 is an apocalyptic number.

161252942 is a deficient number, since it is larger than the sum of its proper divisors (81590890).

161252942 is a wasteful number, since it uses less digits than its factorization.

161252942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321474.

The product of its digits is 8640, while the sum is 32.

The square root of 161252942 is about 12698.5409398088. The cubic root of 161252942 is about 544.2969269116.

The spelling of 161252942 in words is "one hundred sixty-one million, two hundred fifty-two thousand, nine hundred forty-two".