1042211987 has 4 divisors (see below), whose sum is σ = 1042382640. Its totient is φ = 1042041336.

The previous prime is 1042211977. The next prime is 1042212007. The reversal of 1042211987 is 7891122401.

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

It is a cyclic number.

It is not a de Polignac number, because 1042211987 - 2²² = 1038017683 is a prime.

It is a super-3 number, since 3×1042211987³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1042211917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75812 + ... + 88497.

It is an arithmetic number, because the mean of its divisors is an integer number (260595660).

Almost surely, 2^1042211987 is an apocalyptic number.

1042211987 is a deficient number, since it is larger than the sum of its proper divisors (170653).

1042211987 is an equidigital number, since it uses as much as digits as its factorization.

1042211987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170652.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 1042211987 is about 32283.3081793053. The cubic root of 1042211987 is about 1013.8771949853.

The spelling of 1042211987 in words is "one billion, forty-two million, two hundred eleven thousand, nine hundred eighty-seven".