82142693 has 4 divisors (see below), whose sum is σ = 83132448. Its totient is φ = 81152940.

The previous prime is 82142689. The next prime is 82142717. The reversal of 82142693 is 39624128.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82142693 - 2² = 82142689 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82142663) 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, 494753 + ... + 494918.

It is an arithmetic number, because the mean of its divisors is an integer number (20783112).

Almost surely, 2^82142693 is an apocalyptic number.

82142693 is a gapful number since it is divisible by the number (83) formed by its first and last digit.

It is an amenable number.

82142693 is a deficient number, since it is larger than the sum of its proper divisors (989755).

82142693 is an equidigital number, since it uses as much as digits as its factorization.

82142693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989754.

The product of its digits is 20736, while the sum is 35.

The square root of 82142693 is about 9063.2606163566. The cubic root of 82142693 is about 434.7000054278.

The spelling of 82142693 in words is "eighty-two million, one hundred forty-two thousand, six hundred ninety-three".