21411413142 has 32 divisors (see below), whose sum is σ = 48952425984. Its totient is φ = 6116040000.

The previous prime is 21411413137. The next prime is 21411413143. The reversal of 21411413142 is 24131411412.

It is a happy number.

It is a super-2 number, since 2×21411413142² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21411413143) 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, 115767 + ... + 237117.

It is an arithmetic number, because the mean of its divisors is an integer number (1529763312).

Almost surely, 2^21411413142 is an apocalyptic number.

21411413142 is an abundant number, since it is smaller than the sum of its proper divisors (27541012842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21411413142 is a wasteful number, since it uses less digits than its factorization.

21411413142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125564.

The product of its digits is 768, while the sum is 24.

Adding to 21411413142 its reverse (24131411412), we get a palindrome (45542824554).

The spelling of 21411413142 in words is "twenty-one billion, four hundred eleven million, four hundred thirteen thousand, one hundred forty-two".