4201521140 has 48 divisors (see below), whose sum is σ = 9125996544. Its totient is φ = 1623148800.

The previous prime is 4201521097. The next prime is 4201521143. The reversal of 4201521140 is 411251024.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4201521143) 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, 316517 + ... + 329523.

It is an arithmetic number, because the mean of its divisors is an integer number (190124928).

Almost surely, 2^4201521140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4201521140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4562998272).

4201521140 is an abundant number, since it is smaller than the sum of its proper divisors (4924475404).

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

4201521140 is a wasteful number, since it uses less digits than its factorization.

4201521140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13568 (or 13566 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 4201521140 is about 64819.1417715477. The cubic root of 4201521140 is about 1613.6234043277.

Adding to 4201521140 its reverse (411251024), we get a palindrome (4612772164).

The spelling of 4201521140 in words is "four billion, two hundred one million, five hundred twenty-one thousand, one hundred forty".