6142179932921 has 2 divisors, whose sum is σ = 6142179932922. Its totient is φ = 6142179932920.

The previous prime is 6142179932891. The next prime is 6142179932947. The reversal of 6142179932921 is 1292399712416.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5473728160000 + 668451772921 = 2339600^2 + 817589^2 .

It is a cyclic number.

It is not a de Polignac number, because 6142179932921 - 2²² = 6142175738617 is a prime.

It is not a weakly prime, because it can be changed into another prime (6142179032921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3071089966460 + 3071089966461.

It is an arithmetic number, because the mean of its divisors is an integer number (3071089966461).

Almost surely, 2^{6142179932921} is an apocalyptic number.

It is an amenable number.

6142179932921 is a deficient number, since it is larger than the sum of its proper divisors (1).

6142179932921 is an equidigital number, since it uses as much as digits as its factorization.

6142179932921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2939328, while the sum is 56.

The spelling of 6142179932921 in words is "six trillion, one hundred forty-two billion, one hundred seventy-nine million, nine hundred thirty-two thousand, nine hundred twenty-one".