30022142 has 4 divisors (see below), whose sum is σ = 45033216. Its totient is φ = 15011070.

The previous prime is 30022141. The next prime is 30022169. The reversal of 30022142 is 24122003.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30022141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7505534 + ... + 7505537.

It is an arithmetic number, because the mean of its divisors is an integer number (11258304).

Almost surely, 2^30022142 is an apocalyptic number.

30022142 is a deficient number, since it is larger than the sum of its proper divisors (15011074).

30022142 is a wasteful number, since it uses less digits than its factorization.

30022142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15011073.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 30022142 is about 5479.2464810410. The cubic root of 30022142 is about 310.7996766206.

Adding to 30022142 its reverse (24122003), we get a palindrome (54144145).

The spelling of 30022142 in words is "thirty million, twenty-two thousand, one hundred forty-two".