85420503 has 12 divisors (see below), whose sum is σ = 141011728. Its totient is φ = 48811680.

The previous prime is 85420493. The next prime is 85420513. The reversal of 85420503 is 30502458.

It is an interprime number because it is at equal distance from previous prime (85420493) and next prime (85420513).

It is not a de Polignac number, because 85420503 - 2⁴ = 85420487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85420513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 677878 + ... + 678003.

Almost surely, 2^85420503 is an apocalyptic number.

85420503 is a deficient number, since it is larger than the sum of its proper divisors (55591225).

85420503 is a wasteful number, since it uses less digits than its factorization.

85420503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355894 (or 1355891 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 85420503 is about 9242.3212993274. The cubic root of 85420503 is about 440.4068258661.

The spelling of 85420503 in words is "eighty-five million, four hundred twenty thousand, five hundred three".