8142961 has 4 divisors (see below), whose sum is σ = 8149312. Its totient is φ = 8136612.

The previous prime is 8142929. The next prime is 8142971. The reversal of 8142961 is 1692418.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 8142961 - 2⁵ = 8142929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8142971) 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, 501 + ... + 4066.

It is an arithmetic number, because the mean of its divisors is an integer number (2037328).

Almost surely, 2^8142961 is an apocalyptic number.

It is an amenable number.

8142961 is a deficient number, since it is larger than the sum of its proper divisors (6351).

8142961 is a wasteful number, since it uses less digits than its factorization.

8142961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6350.

The product of its digits is 3456, while the sum is 31.

The square root of 8142961 is about 2853.5873913374. The cubic root of 8142961 is about 201.1843148161.

The spelling of 8142961 in words is "eight million, one hundred forty-two thousand, nine hundred sixty-one".