13642405 has 8 divisors (see below), whose sum is σ = 18709632. Its totient is φ = 9354768.

The previous prime is 13642357. The next prime is 13642423. The reversal of 13642405 is 50424631.

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 13642405 - 2⁹ = 13641893 is a prime.

It is a super-2 number, since 2×13642405² = 372230428368050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13642405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194857 + ... + 194926.

It is an arithmetic number, because the mean of its divisors is an integer number (2338704).

Almost surely, 2^13642405 is an apocalyptic number.

It is an amenable number.

13642405 is a deficient number, since it is larger than the sum of its proper divisors (5067227).

13642405 is an equidigital number, since it uses as much as digits as its factorization.

13642405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389795.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 13642405 is about 3693.5626433025. The cubic root of 13642405 is about 238.9444675283.

The spelling of 13642405 in words is "thirteen million, six hundred forty-two thousand, four hundred five".