342021149 has 2 divisors, whose sum is σ = 342021150. Its totient is φ = 342021148.

The previous prime is 342021103. The next prime is 342021161. The reversal of 342021149 is 941120243.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 340144249 + 1876900 = 18443^2 + 1370^2 .

It is a cyclic number.

It is not a de Polignac number, because 342021149 - 2²⁰ = 340972573 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (342021179) 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 as a sum of consecutive naturals, namely, 171010574 + 171010575.

It is an arithmetic number, because the mean of its divisors is an integer number (171010575).

Almost surely, 2^342021149 is an apocalyptic number.

It is an amenable number.

342021149 is a deficient number, since it is larger than the sum of its proper divisors (1).

342021149 is an equidigital number, since it uses as much as digits as its factorization.

342021149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 342021149 is about 18493.8138035398. The cubic root of 342021149 is about 699.3334805271. Note that the first 3 decimals are identical.

The spelling of 342021149 in words is "three hundred forty-two million, twenty-one thousand, one hundred forty-nine".