201497742 has 96 divisors (see below), whose sum is σ = 474439680. Its totient is φ = 61669440.

The previous prime is 201497731. The next prime is 201497749. The reversal of 201497742 is 247794102.

It is a junction number, because it is equal to n+sod(n) for n = 201497697 and 201497706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201497749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1054867 + ... + 1055057.

It is an arithmetic number, because the mean of its divisors is an integer number (4942080).

Almost surely, 2^201497742 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201497742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237219840).

201497742 is an abundant number, since it is smaller than the sum of its proper divisors (272941938).

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

201497742 is a wasteful number, since it uses less digits than its factorization.

201497742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318 (or 315 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 201497742 is about 14194.9900316978. The cubic root of 201497742 is about 586.2597267599.

The spelling of 201497742 in words is "two hundred one million, four hundred ninety-seven thousand, seven hundred forty-two".