30147122 has 4 divisors (see below), whose sum is σ = 45220686. Its totient is φ = 15073560.

The previous prime is 30147121. The next prime is 30147127. The reversal of 30147122 is 22174103.

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., 25816561 + 4330561 = 5081^2 + 2081^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30147094 and 30147103.

It is not an unprimeable number, because it can be changed into a prime (30147121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7536779 + ... + 7536782.

Almost surely, 2^30147122 is an apocalyptic number.

30147122 is a deficient number, since it is larger than the sum of its proper divisors (15073564).

30147122 is a wasteful number, since it uses less digits than its factorization.

30147122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15073563.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 30147122 is about 5490.6394891670. The cubic root of 30147122 is about 311.2303583784.

The spelling of 30147122 in words is "thirty million, one hundred forty-seven thousand, one hundred twenty-two".