1042642571 has 4 divisors (see below), whose sum is σ = 1043398944. Its totient is φ = 1041886200.

The previous prime is 1042642547. The next prime is 1042642583. The reversal of 1042642571 is 1752462401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1752462401 = 281 ⋅6236521.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1042642571 is a prime.

It is a super-2 number, since 2×1042642571² = 2174207061722980082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1042642511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 376115 + ... + 378876.

It is an arithmetic number, because the mean of its divisors is an integer number (260849736).

Almost surely, 2^1042642571 is an apocalyptic number.

1042642571 is a deficient number, since it is larger than the sum of its proper divisors (756373).

1042642571 is an equidigital number, since it uses as much as digits as its factorization.

1042642571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756372.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 1042642571 is about 32289.9763239306. The cubic root of 1042642571 is about 1014.0168016413.

The spelling of 1042642571 in words is "one billion, forty-two million, six hundred forty-two thousand, five hundred seventy-one".