21435142001 has 8 divisors (see below), whose sum is σ = 26381713344. Its totient is φ = 16959672720.

The previous prime is 21435141991. The next prime is 21435142007. The reversal of 21435142001 is 10024153412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21435142001 - 2¹⁴ = 21435125617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21435142007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117775415 + ... + 117775596.

It is an arithmetic number, because the mean of its divisors is an integer number (3297714168).

Almost surely, 2^21435142001 is an apocalyptic number.

It is an amenable number.

21435142001 is a deficient number, since it is larger than the sum of its proper divisors (4946571343).

21435142001 is a wasteful number, since it uses less digits than its factorization.

21435142001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235551031.

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

Adding to 21435142001 its reverse (10024153412), we get a palindrome (31459295413).

The spelling of 21435142001 in words is "twenty-one billion, four hundred thirty-five million, one hundred forty-two thousand, one".