30126242 has 4 divisors (see below), whose sum is σ = 45189366. Its totient is φ = 15063120.

The previous prime is 30126241. The next prime is 30126247. The reversal of 30126242 is 24262103.

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., 26925721 + 3200521 = 5189^2 + 1789^2 .

It is not an unprimeable number, because it can be changed into a prime (30126241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7531559 + ... + 7531562.

Almost surely, 2^30126242 is an apocalyptic number.

30126242 is a deficient number, since it is larger than the sum of its proper divisors (15063124).

30126242 is a wasteful number, since it uses less digits than its factorization.

30126242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15063123.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 30126242 is about 5488.7377419585. The cubic root of 30126242 is about 311.1584887125.

Adding to 30126242 its reverse (24262103), we get a palindrome (54388345).

The spelling of 30126242 in words is "thirty million, one hundred twenty-six thousand, two hundred forty-two".