15530042 has 16 divisors (see below), whose sum is σ = 25641792. Its totient is φ = 6995520.

The previous prime is 15530033. The next prime is 15530089. The reversal of 15530042 is 24003551.

It is a junction number, because it is equal to n+sod(n) for n = 15529996 and 15530023.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 638 + ... + 5609.

It is an arithmetic number, because the mean of its divisors is an integer number (1602612).

Almost surely, 2^15530042 is an apocalyptic number.

15530042 is a deficient number, since it is larger than the sum of its proper divisors (10111750).

15530042 is a wasteful number, since it uses less digits than its factorization.

15530042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6373.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 15530042 is about 3940.8174278949. The cubic root of 15530042 is about 249.4925279187.

Adding to 15530042 its reverse (24003551), we get a palindrome (39533593).

The spelling of 15530042 in words is "fifteen million, five hundred thirty thousand, forty-two".