30436142 has 16 divisors (see below), whose sum is σ = 49929264.
Its totient is φ = 13800000.
The previous prime is 30436129. The next prime is 30436169. The reversal of 30436142 is 24163403.
It is a happy number.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8642 + ... + 11642.
It is an arithmetic number, because the mean of its divisors is an integer number (3120579).
Almost surely, 230436142 is an apocalyptic number.
30436142 is a deficient number, since it is larger than the sum of its proper divisors (19493122).
30436142 is a wasteful number, since it uses less digits than its factorization.
30436142 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3475.
The product of its (nonzero) digits is 1728, while the sum is 23.
The square root of 30436142 is about 5516.8960475978.
The cubic root of 30436142 is about 312.2217837398.
Adding to 30436142 its reverse (24163403), we get a palindrome (54599545).
It can be divided in two parts, 304361 and 42, that added together give a palindrome (304403).
The spelling of 30436142 in words is "thirty million, four hundred thirty-six thousand, one hundred forty-two".