87124419 has 6 divisors (see below), whose sum is σ = 125846396. Its totient is φ = 58082940.

The previous prime is 87124403. The next prime is 87124447. The reversal of 87124419 is 91442178.

It is not a de Polignac number, because 87124419 - 2⁴ = 87124403 is a prime.

It is a super-2 number, since 2×87124419² = 15181328772175122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87124019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4840237 + ... + 4840254.

Almost surely, 2^87124419 is an apocalyptic number.

87124419 is a deficient number, since it is larger than the sum of its proper divisors (38721977).

87124419 is a wasteful number, since it uses less digits than its factorization.

87124419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9680497 (or 9680494 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 87124419 is about 9334.0462287263. The cubic root of 87124419 is about 443.3158901058.

It can be divided in two parts, 8712 and 4419, that added together give a palindrome (13131).

The spelling of 87124419 in words is "eighty-seven million, one hundred twenty-four thousand, four hundred nineteen".