12420069 has 8 divisors (see below), whose sum is σ = 17280192. Its totient is φ = 7920000.

The previous prime is 12420059. The next prime is 12420097. The reversal of 12420069 is 96002421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12420069 - 2¹³ = 12411877 is a prime.

It is a super-2 number, since 2×12420069² = 308516227929522, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12420019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89932 + ... + 90069.

It is an arithmetic number, because the mean of its divisors is an integer number (2160024).

Almost surely, 2^12420069 is an apocalyptic number.

It is an amenable number.

12420069 is a deficient number, since it is larger than the sum of its proper divisors (4860123).

12420069 is a wasteful number, since it uses less digits than its factorization.

12420069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180027.

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

The square root of 12420069 is about 3524.2118267777. The cubic root of 12420069 is about 231.5837077380.

The spelling of 12420069 in words is "twelve million, four hundred twenty thousand, sixty-nine".