23429121 has 4 divisors (see below), whose sum is σ = 31238832. Its totient is φ = 15619412.

The previous prime is 23429117. The next prime is 23429137. The reversal of 23429121 is 12192432.

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 23429121 - 2² = 23429117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23429091 and 23429100.

It is not an unprimeable number, because it can be changed into a prime (23429141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3904851 + ... + 3904856.

It is an arithmetic number, because the mean of its divisors is an integer number (7809708).

It is a Proth number, since it is equal to 715 ⋅ 2¹⁵ + 1 and 715 < 2¹⁵.

Almost surely, 2^23429121 is an apocalyptic number.

It is an amenable number.

23429121 is a deficient number, since it is larger than the sum of its proper divisors (7809711).

23429121 is an equidigital number, since it uses as much as digits as its factorization.

23429121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7809710.

The product of its digits is 864, while the sum is 24.

The square root of 23429121 is about 4840.3637260024. The cubic root of 23429121 is about 286.1444532468.

The spelling of 23429121 in words is "twenty-three million, four hundred twenty-nine thousand, one hundred twenty-one".