30123442 has 8 divisors (see below), whose sum is σ = 45212076. Its totient is φ = 15052752.

The previous prime is 30123437. The next prime is 30123461. The reversal of 30123442 is 24432103.

It can be written as a sum of positive squares in 2 ways, for example, as 22838841 + 7284601 = 4779^2 + 2699^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1108 + ... + 7840.

Almost surely, 2^30123442 is an apocalyptic number.

30123442 is a deficient number, since it is larger than the sum of its proper divisors (15088634).

30123442 is a wasteful number, since it uses less digits than its factorization.

30123442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8972.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 30123442 is about 5488.4826682791. The cubic root of 30123442 is about 311.1488484930.

Adding to 30123442 its reverse (24432103), we get a palindrome (54555545).

The spelling of 30123442 in words is "thirty million, one hundred twenty-three thousand, four hundred forty-two".