20180342 has 16 divisors (see below), whose sum is σ = 37256352. Its totient is φ = 7983360.

The previous prime is 20180341. The next prime is 20180353. The reversal of 20180342 is 24308102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20180341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55259 + ... + 55622.

It is an arithmetic number, because the mean of its divisors is an integer number (2328522).

Almost surely, 2^20180342 is an apocalyptic number.

20180342 is a deficient number, since it is larger than the sum of its proper divisors (17076010).

20180342 is a wasteful number, since it uses less digits than its factorization.

20180342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110903.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 20180342 is about 4492.2535547317. The cubic root of 20180342 is about 272.2551941058.

Adding to 20180342 its reverse (24308102), we get a palindrome (44488444).

The spelling of 20180342 in words is "twenty million, one hundred eighty thousand, three hundred forty-two".