30140434 has 4 divisors (see below), whose sum is σ = 45210654. Its totient is φ = 15070216.

The previous prime is 30140431. The next prime is 30140449. The reversal of 30140434 is 43404103.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 28590409 + 1550025 = 5347^2 + 1245^2 .

It is not an unprimeable number, because it can be changed into a prime (30140431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7535107 + ... + 7535110.

Almost surely, 2^30140434 is an apocalyptic number.

30140434 is a deficient number, since it is larger than the sum of its proper divisors (15070220).

30140434 is a wasteful number, since it uses less digits than its factorization.

30140434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15070219.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 30140434 is about 5490.0304188593. The cubic root of 30140434 is about 311.2073416696.

Adding to 30140434 its reverse (43404103), we get a palindrome (73544537).

The spelling of 30140434 in words is "thirty million, one hundred forty thousand, four hundred thirty-four".