30127442 has 4 divisors (see below), whose sum is σ = 45191166. Its totient is φ = 15063720.

The previous prime is 30127441. The next prime is 30127457. The reversal of 30127442 is 24472103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24472103 = 3457 ⋅7079.

It can be written as a sum of positive squares in only one way, i.e., 17884441 + 12243001 = 4229^2 + 3499^2 .

It is a super-2 number, since 2×30127442² = 1815325522926728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30127441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7531859 + ... + 7531862.

Almost surely, 2^30127442 is an apocalyptic number.

30127442 is a deficient number, since it is larger than the sum of its proper divisors (15063724).

30127442 is a wasteful number, since it uses less digits than its factorization.

30127442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15063723.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 30127442 is about 5488.8470556211. The cubic root of 30127442 is about 311.1626200524.

Adding to 30127442 its reverse (24472103), we get a palindrome (54599545).

The spelling of 30127442 in words is "thirty million, one hundred twenty-seven thousand, four hundred forty-two".