161407429 has 4 divisors (see below), whose sum is σ = 161510976. Its totient is φ = 161303884.

The previous prime is 161407409. The next prime is 161407457. The reversal of 161407429 is 924704161.

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, and also an emirpimes, since its reverse is a distinct semiprime: 924704161 = 24133 ⋅38317.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161407429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161407394 and 161407403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161407409) 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, 49399 + ... + 52564.

It is an arithmetic number, because the mean of its divisors is an integer number (40377744).

Almost surely, 2^161407429 is an apocalyptic number.

It is an amenable number.

161407429 is a deficient number, since it is larger than the sum of its proper divisors (103547).

161407429 is a wasteful number, since it uses less digits than its factorization.

161407429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103546.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 161407429 is about 12704.6223477914. The cubic root of 161407429 is about 544.4706911021.

The spelling of 161407429 in words is "one hundred sixty-one million, four hundred seven thousand, four hundred twenty-nine".