21240503141 has 16 divisors (see below), whose sum is σ = 25024628160. Its totient is φ = 17773662720.

The previous prime is 21240503113. The next prime is 21240503149. The reversal of 21240503141 is 14130504212.

It is not a de Polignac number, because 21240503141 - 2²² = 21236308837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21240503149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159911 + ... + 260868.

It is an arithmetic number, because the mean of its divisors is an integer number (1564039260).

Almost surely, 2^21240503141 is an apocalyptic number.

It is an amenable number.

21240503141 is a deficient number, since it is larger than the sum of its proper divisors (3784125019).

21240503141 is a wasteful number, since it uses less digits than its factorization.

21240503141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421156.

The product of its (nonzero) digits is 960, while the sum is 23.

The spelling of 21240503141 in words is "twenty-one billion, two hundred forty million, five hundred three thousand, one hundred forty-one".