146829421 has 2 divisors, whose sum is σ = 146829422. Its totient is φ = 146829420.

The previous prime is 146829373. The next prime is 146829433. The reversal of 146829421 is 124928641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108451396 + 38378025 = 10414^2 + 6195^2 .

It is a cyclic number.

It is not a de Polignac number, because 146829421 - 2¹⁵ = 146796653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146829461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73414710 + 73414711.

It is an arithmetic number, because the mean of its divisors is an integer number (73414711).

Almost surely, 2^146829421 is an apocalyptic number.

It is an amenable number.

146829421 is a deficient number, since it is larger than the sum of its proper divisors (1).

146829421 is an equidigital number, since it uses as much as digits as its factorization.

146829421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 37.

The square root of 146829421 is about 12117.3190516715. The cubic root of 146829421 is about 527.5589907299.

The spelling of 146829421 in words is "one hundred forty-six million, eight hundred twenty-nine thousand, four hundred twenty-one".