87124943 has 4 divisors (see below), whose sum is σ = 90913008. Its totient is φ = 83336880.

The previous prime is 87124931. The next prime is 87124957. The reversal of 87124943 is 34942178.

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 87124943 - 2⁴ = 87124927 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87124897 and 87124906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87144943) 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, 1893998 + ... + 1894043.

It is an arithmetic number, because the mean of its divisors is an integer number (22728252).

Almost surely, 2^87124943 is an apocalyptic number.

87124943 is a deficient number, since it is larger than the sum of its proper divisors (3788065).

87124943 is a wasteful number, since it uses less digits than its factorization.

87124943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3788064.

The product of its digits is 48384, while the sum is 38.

The square root of 87124943 is about 9334.0742979687. The cubic root of 87124943 is about 443.3167788619.

The spelling of 87124943 in words is "eighty-seven million, one hundred twenty-four thousand, nine hundred forty-three".