1020070571 has 4 divisors (see below), whose sum is σ = 1098537552. Its totient is φ = 941603592.

The previous prime is 1020070559. The next prime is 1020070591. The reversal of 1020070571 is 1750700201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1750700201 = 4217 ⋅415153.

It is a cyclic number.

It is not a de Polignac number, because 1020070571 - 2⁶ = 1020070507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020070591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39233471 + ... + 39233496.

It is an arithmetic number, because the mean of its divisors is an integer number (274634388).

Almost surely, 2^1020070571 is an apocalyptic number.

1020070571 is a deficient number, since it is larger than the sum of its proper divisors (78466981).

1020070571 is an equidigital number, since it uses as much as digits as its factorization.

1020070571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78466980.

The product of its (nonzero) digits is 490, while the sum is 23.

The square root of 1020070571 is about 31938.5436580944. The cubic root of 1020070571 is about 1006.6459241787.

Adding to 1020070571 its reverse (1750700201), we get a palindrome (2770770772).

The spelling of 1020070571 in words is "one billion, twenty million, seventy thousand, five hundred seventy-one".