12402429 has 16 divisors (see below), whose sum is σ = 17872512. Its totient is φ = 7604928.

The previous prime is 12402391. The next prime is 12402431. The reversal of 12402429 is 92420421.

It is not a de Polignac number, because 12402429 - 2¹² = 12398333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12402399 and 12402408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12402479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18667 + ... + 19319.

It is an arithmetic number, because the mean of its divisors is an integer number (1117032).

Almost surely, 2^12402429 is an apocalyptic number.

It is an amenable number.

12402429 is a deficient number, since it is larger than the sum of its proper divisors (5470083).

12402429 is a wasteful number, since it uses less digits than its factorization.

12402429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 12402429 is about 3521.7082502672. The cubic root of 12402429 is about 231.4740177369.

The spelling of 12402429 in words is "twelve million, four hundred two thousand, four hundred twenty-nine".