145681429 has 2 divisors, whose sum is σ = 145681430. Its totient is φ = 145681428.

The previous prime is 145681411. The next prime is 145681441. The reversal of 145681429 is 924186541.

145681429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116683204 + 28998225 = 10802^2 + 5385^2 .

It is a cyclic number.

It is not a de Polignac number, because 145681429 - 2²⁵ = 112126997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 145681391 and 145681400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145681489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72840714 + 72840715.

It is an arithmetic number, because the mean of its divisors is an integer number (72840715).

Almost surely, 2^145681429 is an apocalyptic number.

It is an amenable number.

145681429 is a deficient number, since it is larger than the sum of its proper divisors (1).

145681429 is an equidigital number, since it uses as much as digits as its factorization.

145681429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 40.

The square root of 145681429 is about 12069.8562128967. The cubic root of 145681429 is about 526.1804777612.

The spelling of 145681429 in words is "one hundred forty-five million, six hundred eighty-one thousand, four hundred twenty-nine".