20161342 has 4 divisors (see below), whose sum is σ = 30242016. Its totient is φ = 10080670.

The previous prime is 20161327. The next prime is 20161343. The reversal of 20161342 is 24316102.

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

It is a super-2 number, since 2×20161342² = 812959422481928, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20161343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5040334 + ... + 5040337.

It is an arithmetic number, because the mean of its divisors is an integer number (7560504).

Almost surely, 2^20161342 is an apocalyptic number.

20161342 is a deficient number, since it is larger than the sum of its proper divisors (10080674).

20161342 is a wasteful number, since it uses less digits than its factorization.

20161342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10080673.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 20161342 is about 4490.1383052196. The cubic root of 20161342 is about 272.1697235859.

Adding to 20161342 its reverse (24316102), we get a palindrome (44477444).

It can be divided in two parts, 20161 and 342, that added together give a triangular number (20503 = T₂₀₂).

The spelling of 20161342 in words is "twenty million, one hundred sixty-one thousand, three hundred forty-two".