30151442 has 12 divisors (see below), whose sum is σ = 47733966. Its totient is φ = 14281920.

The previous prime is 30151439. The next prime is 30151447. The reversal of 30151442 is 24415103.

It can be written as a sum of positive squares in only one way, i.e., 30151081 + 361 = 5491^2 + 19^2 .

It is not an unprimeable number, because it can be changed into a prime (30151447) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20159 + ... + 21602.

Almost surely, 2^30151442 is an apocalyptic number.

30151442 is a deficient number, since it is larger than the sum of its proper divisors (17582524).

30151442 is a wasteful number, since it uses less digits than its factorization.

30151442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41801 (or 41782 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 30151442 is about 5491.0328718739. The cubic root of 30151442 is about 311.2452238209.

Adding to 30151442 its reverse (24415103), we get a palindrome (54566545).

The spelling of 30151442 in words is "thirty million, one hundred fifty-one thousand, four hundred forty-two".