101420660 has 96 divisors (see below), whose sum is σ = 242694144. Its totient is φ = 35280000.

The previous prime is 101420659. The next prime is 101420677. The reversal of 101420660 is 66024101.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 671585 + ... + 671735.

It is an arithmetic number, because the mean of its divisors is an integer number (2528064).

Almost surely, 2^101420660 is an apocalyptic number.

101420660 is a gapful number since it is divisible by the number (10) 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 101420660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121347072).

101420660 is an abundant number, since it is smaller than the sum of its proper divisors (141273484).

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

101420660 is a wasteful number, since it uses less digits than its factorization.

101420660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285 (or 283 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 101420660 is about 10070.7824919417. The cubic root of 101420660 is about 466.3465957170.

Adding to 101420660 its reverse (66024101), we get a palindrome (167444761).

The spelling of 101420660 in words is "one hundred one million, four hundred twenty thousand, six hundred sixty".