30211442 has 4 divisors (see below), whose sum is σ = 45317166. Its totient is φ = 15105720.

The previous prime is 30211429. The next prime is 30211451. The reversal of 30211442 is 24411203.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24411203 = 641 ⋅38083.

It can be written as a sum of positive squares in only one way, i.e., 29691601 + 519841 = 5449^2 + 721^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30211442.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7552859 + ... + 7552862.

Almost surely, 2^30211442 is an apocalyptic number.

30211442 is a deficient number, since it is larger than the sum of its proper divisors (15105724).

30211442 is a wasteful number, since it uses less digits than its factorization.

30211442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15105723.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 30211442 is about 5496.4936095660. The cubic root of 30211442 is about 311.4515416462.

Adding to 30211442 its reverse (24411203), we get a palindrome (54622645).

The spelling of 30211442 in words is "thirty million, two hundred eleven thousand, four hundred forty-two".