161542412 has 12 divisors (see below), whose sum is σ = 292447680. Its totient is φ = 77985936.

The previous prime is 161542399. The next prime is 161542417. The reversal of 161542412 is 214245161.

It is not an unprimeable number, because it can be changed into a prime (161542417) 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 3 ways as a sum of consecutive naturals, for example, 696188 + ... + 696419.

It is an arithmetic number, because the mean of its divisors is an integer number (24370640).

Almost surely, 2^161542412 is an apocalyptic number.

It is an amenable number.

161542412 is a deficient number, since it is larger than the sum of its proper divisors (130905268).

161542412 is a wasteful number, since it uses less digits than its factorization.

161542412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392640 (or 1392638 counting only the distinct ones).

The product of its digits is 1920, while the sum is 26.

The square root of 161542412 is about 12709.9335954206. The cubic root of 161542412 is about 544.6224268055.

Adding to 161542412 its reverse (214245161), we get a palindrome (375787573).

The spelling of 161542412 in words is "one hundred sixty-one million, five hundred forty-two thousand, four hundred twelve".