85430242 has 4 divisors (see below), whose sum is σ = 128145366. Its totient is φ = 42715120.

The previous prime is 85430237. The next prime is 85430249. The reversal of 85430242 is 24203458.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 57138481 + 28291761 = 7559^2 + 5319^2 .

It is a super-3 number, since 3×85430242³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 85430242.

It is not an unprimeable number, because it can be changed into a prime (85430249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21357559 + ... + 21357562.

Almost surely, 2^85430242 is an apocalyptic number.

85430242 is a deficient number, since it is larger than the sum of its proper divisors (42715124).

85430242 is a wasteful number, since it uses less digits than its factorization.

85430242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42715123.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 85430242 is about 9242.8481541135. The cubic root of 85430242 is about 440.4235625157.

The spelling of 85430242 in words is "eighty-five million, four hundred thirty thousand, two hundred forty-two".