1040666141 has 4 divisors (see below), whose sum is σ = 1066048284. Its totient is φ = 1015284000.

The previous prime is 1040666129. The next prime is 1040666147. The reversal of 1040666141 is 1416660401.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 509179225 + 531486916 = 22565^2 + 23054^2 .

It is a cyclic number.

It is not a de Polignac number, because 1040666141 - 2¹⁸ = 1040403997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040666147) 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, 12691010 + ... + 12691091.

It is an arithmetic number, because the mean of its divisors is an integer number (266512071).

Almost surely, 2^1040666141 is an apocalyptic number.

It is an amenable number.

1040666141 is a deficient number, since it is larger than the sum of its proper divisors (25382143).

1040666141 is an equidigital number, since it uses as much as digits as its factorization.

1040666141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25382142.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 1040666141 is about 32259.3574176548. The cubic root of 1040666141 is about 1013.3756740037.

The spelling of 1040666141 in words is "one billion, forty million, six hundred sixty-six thousand, one hundred forty-one".