1124141987 has 4 divisors (see below), whose sum is σ = 1124355600. Its totient is φ = 1123928376.

The previous prime is 1124141971. The next prime is 1124141989. The reversal of 1124141987 is 7891414211.

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 1124141987 - 2⁴ = 1124141971 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1124141987.

It is not an unprimeable number, because it can be changed into a prime (1124141989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98708 + ... + 109505.

It is an arithmetic number, because the mean of its divisors is an integer number (281088900).

Almost surely, 2^1124141987 is an apocalyptic number.

1124141987 is a deficient number, since it is larger than the sum of its proper divisors (213613).

1124141987 is an equidigital number, since it uses as much as digits as its factorization.

1124141987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213612.

The product of its digits is 16128, while the sum is 38.

The square root of 1124141987 is about 33528.2267201831. The cubic root of 1124141987 is about 1039.7774385066. Note that the first 3 decimals are identical.

The spelling of 1124141987 in words is "one billion, one hundred twenty-four million, one hundred forty-one thousand, nine hundred eighty-seven".