17420429 has 4 divisors (see below), whose sum is σ = 18760476. Its totient is φ = 16080384.

The previous prime is 17420423. The next prime is 17420443. The reversal of 17420429 is 92402471.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92402471 = 7 ⋅13200353.

It can be written as a sum of positive squares in 2 ways, for example, as 4959529 + 12460900 = 2227^2 + 3530^2 .

It is a cyclic number.

It is not a de Polignac number, because 17420429 - 2²⁴ = 643213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17420423) 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, 670004 + ... + 670029.

It is an arithmetic number, because the mean of its divisors is an integer number (4690119).

Almost surely, 2^17420429 is an apocalyptic number.

It is an amenable number.

17420429 is a deficient number, since it is larger than the sum of its proper divisors (1340047).

17420429 is a wasteful number, since it uses less digits than its factorization.

17420429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340046.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 17420429 is about 4173.7787435368. The cubic root of 17420429 is about 259.2306100887.

The spelling of 17420429 in words is "seventeen million, four hundred twenty thousand, four hundred twenty-nine".