146344421 has 2 divisors, whose sum is σ = 146344422. Its totient is φ = 146344420.

The previous prime is 146344409. The next prime is 146344427. The reversal of 146344421 is 124443641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112063396 + 34281025 = 10586^2 + 5855^2 .

It is a cyclic number.

It is not a de Polignac number, because 146344421 - 2¹⁰ = 146343397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146344427) 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, 73172210 + 73172211.

It is an arithmetic number, because the mean of its divisors is an integer number (73172211).

Almost surely, 2^146344421 is an apocalyptic number.

It is an amenable number.

146344421 is a deficient number, since it is larger than the sum of its proper divisors (1).

146344421 is an equidigital number, since it uses as much as digits as its factorization.

146344421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 29.

The square root of 146344421 is about 12097.2898204515. The cubic root of 146344421 is about 526.9774806835.

The spelling of 146344421 in words is "one hundred forty-six million, three hundred forty-four thousand, four hundred twenty-one".