201442440 has 32 divisors (see below), whose sum is σ = 604327680. Its totient is φ = 53717952.

The previous prime is 201442429. The next prime is 201442457. The reversal of 201442440 is 44244102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 839224 + ... + 839463.

It is an arithmetic number, because the mean of its divisors is an integer number (18885240).

Almost surely, 2^201442440 is an apocalyptic number.

201442440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201442440 is an abundant number, since it is smaller than the sum of its proper divisors (402885240).

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

201442440 is a wasteful number, since it uses less digits than its factorization.

201442440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1678701 (or 1678697 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 201442440 is about 14193.0419572409. The cubic root of 201442440 is about 586.2060879422.

Adding to 201442440 its reverse (44244102), we get a palindrome (245686542).

The spelling of 201442440 in words is "two hundred one million, four hundred forty-two thousand, four hundred forty".