201420123444 has 48 divisors (see below), whose sum is σ = 523264002240. Its totient is φ = 67003282080.

The previous prime is 201420123397. The next prime is 201420123449. The reversal of 201420123444 is 444321024102.

201420123444 is a `hidden beast` number, since 2 + 0 + 1 + 420 + 1 + 234 + 4 + 4 = 666.

It is a super-2 number, since 2×201420123444² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201420123449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1846159 + ... + 1952214.

It is an arithmetic number, because the mean of its divisors is an integer number (10901333380).

Almost surely, 2^201420123444 is an apocalyptic number.

It is an amenable number.

201420123444 is an abundant number, since it is smaller than the sum of its proper divisors (321843878796).

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

201420123444 is a wasteful number, since it uses less digits than its factorization.

201420123444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3798877 (or 3798869 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 201420123444 its reverse (444321024102), we get a palindrome (645741147546).

The spelling of 201420123444 in words is "two hundred one billion, four hundred twenty million, one hundred twenty-three thousand, four hundred forty-four".