1042661573 has 2 divisors, whose sum is σ = 1042661574. Its totient is φ = 1042661572.

The previous prime is 1042661569. The next prime is 1042661617. The reversal of 1042661573 is 3751662401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 907334884 + 135326689 = 30122^2 + 11633^2 .

It is a cyclic number.

It is not a de Polignac number, because 1042661573 - 2² = 1042661569 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1042261573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521330786 + 521330787.

It is an arithmetic number, because the mean of its divisors is an integer number (521330787).

Almost surely, 2^1042661573 is an apocalyptic number.

It is an amenable number.

1042661573 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042661573 is an equidigital number, since it uses as much as digits as its factorization.

1042661573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 1042661573 is about 32290.2705625085. The cubic root of 1042661573 is about 1014.0229617038.

The spelling of 1042661573 in words is "one billion, forty-two million, six hundred sixty-one thousand, five hundred seventy-three".