146623429 has 2 divisors, whose sum is σ = 146623430. Its totient is φ = 146623428.

The previous prime is 146623381. The next prime is 146623439. The reversal of 146623429 is 924326641.

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., 75220929 + 71402500 = 8673^2 + 8450^2 .

It is a cyclic number.

It is not a de Polignac number, because 146623429 - 2¹¹ = 146621381 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 (146623439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73311714 + 73311715.

It is an arithmetic number, because the mean of its divisors is an integer number (73311715).

Almost surely, 2^146623429 is an apocalyptic number.

It is an amenable number.

146623429 is a deficient number, since it is larger than the sum of its proper divisors (1).

146623429 is an equidigital number, since it uses as much as digits as its factorization.

146623429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 37.

The square root of 146623429 is about 12108.8161683957. The cubic root of 146623429 is about 527.3121651031.

The spelling of 146623429 in words is "one hundred forty-six million, six hundred twenty-three thousand, four hundred twenty-nine".