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80142023 = 136164771
BaseRepresentation
bin1001100011011…
…01111011000111
312120210122012002
410301231323013
5131004021043
611541415515
71662124133
oct461557307
9176718162
1080142023
1141268985
1222a0a59b
13137acc20
14a9023c3
157080bb8
hex4c6dec7

80142023 has 4 divisors (see below), whose sum is σ = 86306808. Its totient is φ = 73977240.

The previous prime is 80142011. The next prime is 80142053. The reversal of 80142023 is 32024108.

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

It is a cyclic number.

It is not a de Polignac number, because 80142023 - 210 = 80140999 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80141986 and 80142004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80142053) 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, 3082373 + ... + 3082398.

It is an arithmetic number, because the mean of its divisors is an integer number (21576702).

Almost surely, 280142023 is an apocalyptic number.

80142023 is a deficient number, since it is larger than the sum of its proper divisors (6164785).

80142023 is a wasteful number, since it uses less digits than its factorization.

80142023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6164784.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 80142023 is about 8952.2077165356. The cubic root of 80142023 is about 431.1417699975.

It can be divided in two parts, 801 and 42023, that added together give a palindrome (42824).

The spelling of 80142023 in words is "eighty million, one hundred forty-two thousand, twenty-three".

Divisors: 1 13 6164771 80142023