1042585881 has 8 divisors (see below), whose sum is σ = 1393254240. Its totient is φ = 693487392.

The previous prime is 1042585847. The next prime is 1042585903. The reversal of 1042585881 is 1885852401.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1042585881 - 2²³ = 1034197273 is a prime.

It is a super-2 number, since 2×1042585881² = 2173970638521092322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1042585801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390916 + ... + 393573.

It is an arithmetic number, because the mean of its divisors is an integer number (174156780).

Almost surely, 2^1042585881 is an apocalyptic number.

It is an amenable number.

1042585881 is a deficient number, since it is larger than the sum of its proper divisors (350668359).

1042585881 is an equidigital number, since it uses as much as digits as its factorization.

1042585881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784935.

The product of its (nonzero) digits is 102400, while the sum is 42.

The square root of 1042585881 is about 32289.0984854022. The cubic root of 1042585881 is about 1013.9984234499.

The spelling of 1042585881 in words is "one billion, forty-two million, five hundred eighty-five thousand, eight hundred eighty-one".