1575442242 has 48 divisors (see below), whose sum is σ = 3784847040. Its totient is φ = 469576800.

The previous prime is 1575442237. The next prime is 1575442243. The reversal of 1575442242 is 2422445751.

1575442242 is a `hidden beast` number, since 1 + 57 + 544 + 22 + 42 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1575442197 and 1575442206.

It is not an unprimeable number, because it can be changed into a prime (1575442243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53142 + ... + 77297.

It is an arithmetic number, because the mean of its divisors is an integer number (78850980).

Almost surely, 2^1575442242 is an apocalyptic number.

1575442242 is an abundant number, since it is smaller than the sum of its proper divisors (2209404798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1575442242 is a wasteful number, since it uses less digits than its factorization.

1575442242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130519 (or 130516 counting only the distinct ones).

The product of its digits is 89600, while the sum is 36.

The square root of 1575442242 is about 39691.8410003870. The cubic root of 1575442242 is about 1163.5922731471.

Adding to 1575442242 its reverse (2422445751), we get a palindrome (3997887993).

The spelling of 1575442242 in words is "one billion, five hundred seventy-five million, four hundred forty-two thousand, two hundred forty-two".