30605242 has 4 divisors (see below), whose sum is σ = 45907866. Its totient is φ = 15302620.

The previous prime is 30605233. The next prime is 30605261. The reversal of 30605242 is 24250603.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24250603 = 13 ⋅1865431.

It can be written as a sum of positive squares in only one way, i.e., 23902321 + 6702921 = 4889^2 + 2589^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7651309 + ... + 7651312.

Almost surely, 2^30605242 is an apocalyptic number.

30605242 is a deficient number, since it is larger than the sum of its proper divisors (15302624).

30605242 is a wasteful number, since it uses less digits than its factorization.

30605242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15302623.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 30605242 is about 5532.2004663606. The cubic root of 30605242 is about 312.7989399671.

Adding to 30605242 its reverse (24250603), we get a palindrome (54855845).

The spelling of 30605242 in words is "thirty million, six hundred five thousand, two hundred forty-two".