18142302 has 32 divisors (see below), whose sum is σ = 39093120. Its totient is φ = 5594400.

The previous prime is 18142301. The next prime is 18142307. The reversal of 18142302 is 20324181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18142301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3052 + ... + 6752.

It is an arithmetic number, because the mean of its divisors is an integer number (1221660).

Almost surely, 2^18142302 is an apocalyptic number.

18142302 is an abundant number, since it is smaller than the sum of its proper divisors (20950818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18142302 is a wasteful number, since it uses less digits than its factorization.

18142302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3768.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 18142302 is about 4259.3781236232. The cubic root of 18142302 is about 262.7629510217.

Adding to 18142302 its reverse (20324181), we get a palindrome (38466483).

The spelling of 18142302 in words is "eighteen million, one hundred forty-two thousand, three hundred two".