872542019 has 4 divisors (see below), whose sum is σ = 872606280. Its totient is φ = 872477760.

The previous prime is 872542003. The next prime is 872542037. The reversal of 872542019 is 910245278.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 872542019 - 2⁴ = 872542003 is a prime.

It is a super-2 number, since 2×872542019² = 1522659149841192722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (872542049) 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, 2897 + ... + 41874.

It is an arithmetic number, because the mean of its divisors is an integer number (218151570).

Almost surely, 2^872542019 is an apocalyptic number.

872542019 is a deficient number, since it is larger than the sum of its proper divisors (64261).

872542019 is a wasteful number, since it uses less digits than its factorization.

872542019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64260.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 872542019 is about 29538.8222344764. The cubic root of 872542019 is about 955.5691422116.

The spelling of 872542019 in words is "eight hundred seventy-two million, five hundred forty-two thousand, nineteen".