85742530 has 8 divisors (see below), whose sum is σ = 154336572. Its totient is φ = 34297008.

The previous prime is 85742467. The next prime is 85742557. The reversal of 85742530 is 3524758.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 69006249 + 16736281 = 8307^2 + 4091^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4287117 + ... + 4287136.

Almost surely, 2^85742530 is an apocalyptic number.

85742530 is a deficient number, since it is larger than the sum of its proper divisors (68594042).

85742530 is a wasteful number, since it uses less digits than its factorization.

85742530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8574260.

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 85742530 is about 9259.7262378539. The cubic root of 85742530 is about 440.9595621795.

The spelling of 85742530 in words is "eighty-five million, seven hundred forty-two thousand, five hundred thirty".