201421470 has 64 divisors (see below), whose sum is σ = 514241280. Its totient is φ = 50347008.

The previous prime is 201421469. The next prime is 201421471. The reversal of 201421470 is 74124102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (201421469) and next prime (201421471).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201421471) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53469 + ... + 57111.

It is an arithmetic number, because the mean of its divisors is an integer number (8035020).

Almost surely, 2^201421470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201421470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257120640).

201421470 is an abundant number, since it is smaller than the sum of its proper divisors (312819810).

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

201421470 is a wasteful number, since it uses less digits than its factorization.

201421470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3769.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 201421470 is about 14192.3031957466. The cubic root of 201421470 is about 586.1857460384.

Adding to 201421470 its reverse (74124102), we get a palindrome (275545572).

It can be divided in two parts, 20142 and 1470, that added together give a palindrome (21612).

The spelling of 201421470 in words is "two hundred one million, four hundred twenty-one thousand, four hundred seventy".