201501420 has 24 divisors (see below), whose sum is σ = 564204144. Its totient is φ = 53733696.

The previous prime is 201501407. The next prime is 201501427. The reversal of 201501420 is 24105102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 201501420.

It is not an unprimeable number, because it can be changed into a prime (201501427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1679119 + ... + 1679238.

It is an arithmetic number, because the mean of its divisors is an integer number (23508506).

Almost surely, 2^201501420 is an apocalyptic number.

201501420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201501420 is an abundant number, since it is smaller than the sum of its proper divisors (362702724).

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

201501420 is a wasteful number, since it uses less digits than its factorization.

201501420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3358369 (or 3358367 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 201501420 is about 14195.1195838570. The cubic root of 201501420 is about 586.2632937977.

Adding to 201501420 its reverse (24105102), we get a palindrome (225606522).

The spelling of 201501420 in words is "two hundred one million, five hundred one thousand, four hundred twenty".