12420031 has 8 divisors (see below), whose sum is σ = 13602960. Its totient is φ = 11269632.

The previous prime is 12420029. The next prime is 12420041. The reversal of 12420031 is 13002421.

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

It is a cyclic number.

It is not a de Polignac number, because 12420031 - 2¹ = 12420029 is a prime.

It is a super-2 number, since 2×12420031² = 308514340081922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12419993 and 12420020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12420011) 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, 7330 + ... + 8863.

It is an arithmetic number, because the mean of its divisors is an integer number (1700370).

Almost surely, 2^12420031 is an apocalyptic number.

12420031 is a deficient number, since it is larger than the sum of its proper divisors (1182929).

12420031 is a wasteful number, since it uses less digits than its factorization.

12420031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16265.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 12420031 is about 3524.2064354972. The cubic root of 12420031 is about 231.5834715560.

Adding to 12420031 its reverse (13002421), we get a palindrome (25422452).

The spelling of 12420031 in words is "twelve million, four hundred twenty thousand, thirty-one".