186225142 has 4 divisors (see below), whose sum is σ = 279337716. Its totient is φ = 93112570.

The previous prime is 186225103. The next prime is 186225167. The reversal of 186225142 is 241522681.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 241522681 = 15541².

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46556284 + ... + 46556287.

It is an arithmetic number, because the mean of its divisors is an integer number (69834429).

Almost surely, 2^186225142 is an apocalyptic number.

186225142 is a deficient number, since it is larger than the sum of its proper divisors (93112574).

186225142 is an equidigital number, since it uses as much as digits as its factorization.

186225142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93112573.

The product of its digits is 7680, while the sum is 31.

The square root of 186225142 is about 13646.4333069121. The cubic root of 186225142 is about 571.0569718121.

The spelling of 186225142 in words is "one hundred eighty-six million, two hundred twenty-five thousand, one hundred forty-two".