201142241421 has 64 divisors (see below), whose sum is σ = 310742784000. Its totient is φ = 114451833600.

The previous prime is 201142241413. The next prime is 201142241429. The reversal of 201142241421 is 124142241102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (201142241413) and next prime (201142241429).

It is not a de Polignac number, because 201142241421 - 2³ = 201142241413 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 201142241391 and 201142241400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201142241429) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 45494791 + ... + 45499211.

It is an arithmetic number, because the mean of its divisors is an integer number (4855356000).

Almost surely, 2^201142241421 is an apocalyptic number.

It is an amenable number.

201142241421 is a deficient number, since it is larger than the sum of its proper divisors (109600542579).

201142241421 is a wasteful number, since it uses less digits than its factorization.

201142241421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5090.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 201142241421 its reverse (124142241102), we get a palindrome (325284482523).

The spelling of 201142241421 in words is "two hundred one billion, one hundred forty-two million, two hundred forty-one thousand, four hundred twenty-one".