201421450 has 12 divisors (see below), whose sum is σ = 374643990. Its totient is φ = 80568560.

The previous prime is 201421439. The next prime is 201421459. The reversal of 201421450 is 54124102.

It can be written as a sum of positive squares in 3 ways, for example, as 136118889 + 65302561 = 11667^2 + 8081^2 .

It is not an unprimeable number, because it can be changed into a prime (201421459) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2014165 + ... + 2014264.

Almost surely, 2^201421450 is an apocalyptic number.

201421450 is a deficient number, since it is larger than the sum of its proper divisors (173222540).

201421450 is a wasteful number, since it uses less digits than its factorization.

201421450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4028441 (or 4028436 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 201421450 is about 14192.3024911393. The cubic root of 201421450 is about 586.1857266368.

Adding to 201421450 its reverse (54124102), we get a palindrome (255545552).

The spelling of 201421450 in words is "two hundred one million, four hundred twenty-one thousand, four hundred fifty".