201421752 has 96 divisors (see below), whose sum is σ = 595900800. Its totient is φ = 56554176.

The previous prime is 201421751. The next prime is 201421757. The reversal of 201421752 is 257124102.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201421751) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67933 + ... + 70835.

It is an arithmetic number, because the mean of its divisors is an integer number (6207300).

Almost surely, 2^201421752 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 201421752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297950400).

201421752 is an abundant number, since it is smaller than the sum of its proper divisors (394479048).

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

201421752 is a wasteful number, since it uses less digits than its factorization.

201421752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2985 (or 2974 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 201421752 is about 14192.3131307056. The cubic root of 201421752 is about 586.1860196013.

Adding to 201421752 its reverse (257124102), we get a palindrome (458545854).

The spelling of 201421752 in words is "two hundred one million, four hundred twenty-one thousand, seven hundred fifty-two".