201151420 has 48 divisors (see below), whose sum is σ = 438818688. Its totient is φ = 77394240.

The previous prime is 201151409. The next prime is 201151421. The reversal of 201151420 is 24151102.

It is a junction number, because it is equal to n+sod(n) for n = 201151394 and 201151403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201151421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55875 + ... + 59365.

It is an arithmetic number, because the mean of its divisors is an integer number (9142056).

Almost surely, 2^201151420 is an apocalyptic number.

201151420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201151420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219409344).

201151420 is an abundant number, since it is smaller than the sum of its proper divisors (237667268).

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

201151420 is a wasteful number, since it uses less digits than its factorization.

201151420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3610 (or 3608 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 201151420 is about 14182.7860450618. The cubic root of 201151420 is about 585.9236583563.

The spelling of 201151420 in words is "two hundred one million, one hundred fifty-one thousand, four hundred twenty".