85742481 has 16 divisors (see below), whose sum is σ = 125549568. Its totient is φ = 51618000.

The previous prime is 85742467. The next prime is 85742557. The reversal of 85742481 is 18424758.

It is a happy number.

It is not a de Polignac number, because 85742481 - 2¹⁴ = 85726097 is a prime.

It is a super-2 number, since 2×85742481² = 14703546096070722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85742411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3621 + ... + 13586.

It is an arithmetic number, because the mean of its divisors is an integer number (7846848).

Almost surely, 2^85742481 is an apocalyptic number.

It is an amenable number.

85742481 is a deficient number, since it is larger than the sum of its proper divisors (39807087).

85742481 is a wasteful number, since it uses less digits than its factorization.

85742481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17372.

The product of its digits is 71680, while the sum is 39.

The square root of 85742481 is about 9259.7235919870. The cubic root of 85742481 is about 440.9594781798.

The spelling of 85742481 in words is "eighty-five million, seven hundred forty-two thousand, four hundred eighty-one".