39121053403 has 4 divisors (see below), whose sum is σ = 39121555968. Its totient is φ = 39120550840.

The previous prime is 39121053343. The next prime is 39121053407. The reversal of 39121053403 is 30435012193.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 39121053403 - 2¹⁷ = 39120922331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39121053407) 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, 106843 + ... + 299428.

It is an arithmetic number, because the mean of its divisors is an integer number (9780388992).

Almost surely, 2^39121053403 is an apocalyptic number.

39121053403 is a deficient number, since it is larger than the sum of its proper divisors (502565).

39121053403 is an equidigital number, since it uses as much as digits as its factorization.

39121053403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502564.

The product of its (nonzero) digits is 9720, while the sum is 31.

Adding to 39121053403 its reverse (30435012193), we get a palindrome (69556065596).

The spelling of 39121053403 in words is "thirty-nine billion, one hundred twenty-one million, fifty-three thousand, four hundred three".