30451442 has 12 divisors (see below), whose sum is σ = 53134830. Its totient is φ = 13050576.

The previous prime is 30451427. The next prime is 30451453. The reversal of 30451442 is 24415403.

It can be written as a sum of positive squares in only one way, i.e., 18054001 + 12397441 = 4249^2 + 3521^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 155267 + ... + 155462.

Almost surely, 2^30451442 is an apocalyptic number.

30451442 is a deficient number, since it is larger than the sum of its proper divisors (22683388).

30451442 is a wasteful number, since it uses less digits than its factorization.

30451442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310745 (or 310738 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 30451442 is about 5518.2825226695. The cubic root of 30451442 is about 312.2740920893.

Adding to 30451442 its reverse (24415403), we get a palindrome (54866845).

The spelling of 30451442 in words is "thirty million, four hundred fifty-one thousand, four hundred forty-two".