30271642 has 4 divisors (see below), whose sum is σ = 45407466. Its totient is φ = 15135820.

The previous prime is 30271603. The next prime is 30271649. The reversal of 30271642 is 24617203.

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., 15610401 + 14661241 = 3951^2 + 3829^2 .

It is not an unprimeable number, because it can be changed into a prime (30271649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7567909 + ... + 7567912.

Almost surely, 2^30271642 is an apocalyptic number.

30271642 is a deficient number, since it is larger than the sum of its proper divisors (15135824).

30271642 is a wasteful number, since it uses less digits than its factorization.

30271642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15135823.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 30271642 is about 5501.9671027733. The cubic root of 30271642 is about 311.6582728476.

Adding to 30271642 its reverse (24617203), we get a palindrome (54888845).

The spelling of 30271642 in words is "thirty million, two hundred seventy-one thousand, six hundred forty-two".