1061591042 has 6 divisors (see below), whose sum is σ = 1592455683. Its totient is φ = 530772482.

The previous prime is 1061590987. The next prime is 1061591051. The reversal of 1061591042 is 2401951601.

It can be written as a sum of positive squares in only one way, i.e., 530795521 + 530795521 = 23039^2 + 23039^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=23039.

It is a super-2 number, since 2×1061591042² = 2253951080909291528, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1061590996 and 1061591014.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 34559 + ... + 57597.

Almost surely, 2^1061591042 is an apocalyptic number.

1061591042 is a deficient number, since it is larger than the sum of its proper divisors (530864641).

1061591042 is an frugal number, since it uses more digits than its factorization.

1061591042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46080 (or 23041 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 1061591042 is about 32582.0662635137. The cubic root of 1061591042 is about 1020.1227079082.

The spelling of 1061591042 in words is "one billion, sixty-one million, five hundred ninety-one thousand, forty-two".