13642345 has 8 divisors (see below), whose sum is σ = 16639560. Its totient is φ = 10734720.

The previous prime is 13642337. The next prime is 13642351. The reversal of 13642345 is 54324631.

13642345 = T₂₉₁ + T₂₉₂ + ... + T₄₇₃.

It can be written as a sum of positive squares in 4 ways, for example, as 363609 + 13278736 = 603^2 + 3644^2 .

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

It is not a de Polignac number, because 13642345 - 2³ = 13642337 is a prime.

It is a super-2 number, since 2×13642345² = 372227154198050, which contains 22 as substring.

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, 22060 + ... + 22669.

It is an arithmetic number, because the mean of its divisors is an integer number (2079945).

Almost surely, 2^13642345 is an apocalyptic number.

It is an amenable number.

13642345 is a deficient number, since it is larger than the sum of its proper divisors (2997215).

13642345 is an equidigital number, since it uses as much as digits as its factorization.

13642345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44795.

The product of its digits is 8640, while the sum is 28.

The square root of 13642345 is about 3693.5545210542. The cubic root of 13642345 is about 238.9441172311.

Adding to 13642345 its reverse (54324631), we get a palindrome (67966976).

The spelling of 13642345 in words is "thirteen million, six hundred forty-two thousand, three hundred forty-five".