18207142 has 16 divisors (see below), whose sum is σ = 28163520. Its totient is φ = 8823168.

The previous prime is 18207131. The next prime is 18207151. The reversal of 18207142 is 24170281.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9358 + ... + 11134.

It is an arithmetic number, because the mean of its divisors is an integer number (1760220).

Almost surely, 2^18207142 is an apocalyptic number.

18207142 is a deficient number, since it is larger than the sum of its proper divisors (9956378).

18207142 is a wasteful number, since it uses less digits than its factorization.

18207142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1935.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 18207142 is about 4266.9827747485. The cubic root of 18207142 is about 263.0756142610.

The spelling of 18207142 in words is "eighteen million, two hundred seven thousand, one hundred forty-two".