29420423 has 4 divisors (see below), whose sum is σ = 29521128. Its totient is φ = 29319720.

The previous prime is 29420407. The next prime is 29420431. The reversal of 29420423 is 32402492.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 29420423 - 2⁴ = 29420407 is a prime.

It is a super-2 number, since 2×29420423² = 1731122578997858, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 29420392 and 29420401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29420623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49913 + ... + 50498.

It is an arithmetic number, because the mean of its divisors is an integer number (7380282).

Almost surely, 2^29420423 is an apocalyptic number.

29420423 is a deficient number, since it is larger than the sum of its proper divisors (100705).

29420423 is a wasteful number, since it uses less digits than its factorization.

29420423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100704.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 29420423 is about 5424.0596420025. The cubic root of 29420423 is about 308.7092463707.

The spelling of 29420423 in words is "twenty-nine million, four hundred twenty thousand, four hundred twenty-three".