83142409 has 4 divisors (see below), whose sum is σ = 95019904. Its totient is φ = 71264916.

The previous prime is 83142407. The next prime is 83142413. The reversal of 83142409 is 90424138.

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 83142409 - 2¹ = 83142407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83142407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5938737 + ... + 5938750.

It is an arithmetic number, because the mean of its divisors is an integer number (23754976).

Almost surely, 2^83142409 is an apocalyptic number.

It is an amenable number.

83142409 is a deficient number, since it is larger than the sum of its proper divisors (11877495).

83142409 is a wasteful number, since it uses less digits than its factorization.

83142409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11877494.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 83142409 is about 9118.2459387757. The cubic root of 83142409 is about 436.4564017570.

The spelling of 83142409 in words is "eighty-three million, one hundred forty-two thousand, four hundred nine".