13642429 has 2 divisors, whose sum is σ = 13642430. Its totient is φ = 13642428.

The previous prime is 13642423. The next prime is 13642439. The reversal of 13642429 is 92424631.

It is a happy number.

13642429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9622404 + 4020025 = 3102^2 + 2005^2 .

It is a cyclic number.

It is not a de Polignac number, because 13642429 - 2¹¹ = 13640381 is a prime.

It is a super-2 number, since 2×13642429² = 372231738040082, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13642429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13642423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6821214 + 6821215.

It is an arithmetic number, because the mean of its divisors is an integer number (6821215).

Almost surely, 2^13642429 is an apocalyptic number.

It is an amenable number.

13642429 is a deficient number, since it is larger than the sum of its proper divisors (1).

13642429 is an equidigital number, since it uses as much as digits as its factorization.

13642429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 31.

The square root of 13642429 is about 3693.5658921969. The cubic root of 13642429 is about 238.9446076469.

The spelling of 13642429 in words is "thirteen million, six hundred forty-two thousand, four hundred twenty-nine".