201542256 has 140 divisors (see below), whose sum is σ = 602575272. Its totient is φ = 65225088.

The previous prime is 201542239. The next prime is 201542273. The reversal of 201542256 is 652245102.

It is an interprime number because it is at equal distance from previous prime (201542239) and next prime (201542273).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 431335 + ... + 431801.

Almost surely, 2^201542256 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 201542256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (301287636).

201542256 is an abundant number, since it is smaller than the sum of its proper divisors (401033016).

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

201542256 is an equidigital number, since it uses as much as digits as its factorization.

201542256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530 (or 509 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 201542256 is about 14196.5578926724. The cubic root of 201542256 is about 586.3028948929.

Adding to 201542256 its reverse (652245102), we get a palindrome (853787358).

The spelling of 201542256 in words is "two hundred one million, five hundred forty-two thousand, two hundred fifty-six".