39042401 has 4 divisors (see below), whose sum is σ = 39055812. Its totient is φ = 39028992.

The previous prime is 39042389. The next prime is 39042457. The reversal of 39042401 is 10424093.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 10424093 = 53 ⋅196681.

It can be written as a sum of positive squares in 2 ways, for example, as 3996001 + 35046400 = 1999^2 + 5920^2 .

It is a cyclic number.

It is not a de Polignac number, because 39042401 - 2⁶ = 39042337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39042301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 296 + ... + 8841.

It is an arithmetic number, because the mean of its divisors is an integer number (9763953).

Almost surely, 2^39042401 is an apocalyptic number.

It is an amenable number.

39042401 is a deficient number, since it is larger than the sum of its proper divisors (13411).

39042401 is an equidigital number, since it uses as much as digits as its factorization.

39042401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13410.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 39042401 is about 6248.3918731142. The cubic root of 39042401 is about 339.2439978722.

Adding to 39042401 its reverse (10424093), we get a palindrome (49466494).

The spelling of 39042401 in words is "thirty-nine million, forty-two thousand, four hundred one".