161401429 has 4 divisors (see below), whose sum is σ = 184458784. Its totient is φ = 138344076.

The previous prime is 161401393. The next prime is 161401439. The reversal of 161401429 is 924104161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 161401429 - 2⁹ = 161400917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161401397 and 161401406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161401439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11528667 + ... + 11528680.

It is an arithmetic number, because the mean of its divisors is an integer number (46114696).

Almost surely, 2^161401429 is an apocalyptic number.

It is an amenable number.

161401429 is a deficient number, since it is larger than the sum of its proper divisors (23057355).

161401429 is an equidigital number, since it uses as much as digits as its factorization.

161401429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23057354.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 161401429 is about 12704.3862110690. The cubic root of 161401429 is about 544.4639444803.

The spelling of 161401429 in words is "one hundred sixty-one million, four hundred one thousand, four hundred twenty-nine".