142079521 has 2 divisors, whose sum is σ = 142079522. Its totient is φ = 142079520.

The previous prime is 142079503. The next prime is 142079569. The reversal of 142079521 is 125970241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94965025 + 47114496 = 9745^2 + 6864^2 .

It is a cyclic number.

It is not a de Polignac number, because 142079521 - 2¹¹ = 142077473 is a prime.

It is not a weakly prime, because it can be changed into another prime (142079221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71039760 + 71039761.

It is an arithmetic number, because the mean of its divisors is an integer number (71039761).

Almost surely, 2^142079521 is an apocalyptic number.

It is an amenable number.

142079521 is a deficient number, since it is larger than the sum of its proper divisors (1).

142079521 is an equidigital number, since it uses as much as digits as its factorization.

142079521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 142079521 is about 11919.7114478497. The cubic root of 142079521 is about 521.8077136098.

The spelling of 142079521 in words is "one hundred forty-two million, seventy-nine thousand, five hundred twenty-one".