85029121 has 8 divisors (see below), whose sum is σ = 92227464. Its totient is φ = 78074880.

The previous prime is 85029107. The next prime is 85029127. The reversal of 85029121 is 12192058.

It can be written as a sum of positive squares in 4 ways, for example, as 2873025 + 82156096 = 1695^2 + 9064^2 .

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

It is not a de Polignac number, because 85029121 - 2²¹ = 82931969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85029121.

It is not an unprimeable number, because it can be changed into a prime (85029127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60300 + ... + 61693.

It is an arithmetic number, because the mean of its divisors is an integer number (11528433).

Almost surely, 2^85029121 is an apocalyptic number.

It is an amenable number.

85029121 is a deficient number, since it is larger than the sum of its proper divisors (7198343).

85029121 is a wasteful number, since it uses less digits than its factorization.

85029121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122051.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 85029121 is about 9221.1236300139. The cubic root of 85029121 is about 439.7331732776.

The spelling of 85029121 in words is "eighty-five million, twenty-nine thousand, one hundred twenty-one".