101421572 has 18 divisors (see below), whose sum is σ = 206465742. Its totient is φ = 43466304.

The previous prime is 101421571. The next prime is 101421599. The reversal of 101421572 is 275124101.

It can be written as a sum of positive squares in only one way, i.e., 53202436 + 48219136 = 7294^2 + 6944^2 .

It is not an unprimeable number, because it can be changed into a prime (101421571) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 258533 + ... + 258924.

It is an arithmetic number, because the mean of its divisors is an integer number (11470319).

Almost surely, 2^101421572 is an apocalyptic number.

It is an amenable number.

101421572 is an abundant number, since it is smaller than the sum of its proper divisors (105044170).

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

101421572 is a wasteful number, since it uses less digits than its factorization.

101421572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517475 (or 517466 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 101421572 is about 10070.8277713403. The cubic root of 101421572 is about 466.3479935480.

Adding to 101421572 its reverse (275124101), we get a palindrome (376545673).

The spelling of 101421572 in words is "one hundred one million, four hundred twenty-one thousand, five hundred seventy-two".