80142245 has 4 divisors (see below), whose sum is σ = 96170700. Its totient is φ = 64113792.

The previous prime is 80142241. The next prime is 80142287. The reversal of 80142245 is 54224108.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10903204 + 69239041 = 3302^2 + 8321^2 .

It is a cyclic number.

It is not a de Polignac number, because 80142245 - 2² = 80142241 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80142241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8014220 + ... + 8014229.

It is an arithmetic number, because the mean of its divisors is an integer number (24042675).

Almost surely, 2^80142245 is an apocalyptic number.

It is an amenable number.

80142245 is a deficient number, since it is larger than the sum of its proper divisors (16028455).

80142245 is a wasteful number, since it uses less digits than its factorization.

80142245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16028454.

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 80142245 is about 8952.2201157031. The cubic root of 80142245 is about 431.1421680965.

The spelling of 80142245 in words is "eighty million, one hundred forty-two thousand, two hundred forty-five".