13621042 has 8 divisors (see below), whose sum is σ = 20447532. Its totient is φ = 6805200.

The previous prime is 13621019. The next prime is 13621051. The reversal of 13621042 is 24012631.

It can be written as a sum of positive squares in 2 ways, for example, as 13608721 + 12321 = 3689^2 + 111^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2692 + ... + 5872.

Almost surely, 2^13621042 is an apocalyptic number.

13621042 is a deficient number, since it is larger than the sum of its proper divisors (6826490).

13621042 is a wasteful number, since it uses less digits than its factorization.

13621042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5324.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 13621042 is about 3690.6695869449. The cubic root of 13621042 is about 238.8196792318.

Adding to 13621042 its reverse (24012631), we get a palindrome (37633673).

It can be divided in two parts, 13 and 621042, that added together give a triangular number (621055 = T₁₁₁₄).

The spelling of 13621042 in words is "thirteen million, six hundred twenty-one thousand, forty-two".