20403141 has 12 divisors (see below), whose sum is σ = 29902656. Its totient is φ = 12365320.

The previous prime is 20403137. The next prime is 20403151. The reversal of 20403141 is 14130402.

It is not a de Polignac number, because 20403141 - 2² = 20403137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20403141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20403121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27741 + ... + 28466.

It is an arithmetic number, because the mean of its divisors is an integer number (2491888).

Almost surely, 2^20403141 is an apocalyptic number.

It is an amenable number.

20403141 is a deficient number, since it is larger than the sum of its proper divisors (9499515).

20403141 is a wasteful number, since it uses less digits than its factorization.

20403141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56232 (or 56221 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 20403141 is about 4516.9836174155. The cubic root of 20403141 is about 273.2534645023.

Adding to 20403141 its reverse (14130402), we get a palindrome (34533543).

The spelling of 20403141 in words is "twenty million, four hundred three thousand, one hundred forty-one".