101529421 has 6 divisors (see below), whose sum is σ = 118105710. Its totient is φ = 87025176.

The previous prime is 101529419. The next prime is 101529427. The reversal of 101529421 is 124925101.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 62015625 + 39513796 = 7875^2 + 6286^2 .

It is not a de Polignac number, because 101529421 - 2¹ = 101529419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101529427) 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, 1035966 + ... + 1036063.

It is an arithmetic number, because the mean of its divisors is an integer number (19684285).

Almost surely, 2^101529421 is an apocalyptic number.

It is an amenable number.

101529421 is a deficient number, since it is larger than the sum of its proper divisors (16576289).

101529421 is an equidigital number, since it uses as much as digits as its factorization.

101529421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2072043 (or 2072036 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 101529421 is about 10076.1808737239. The cubic root of 101529421 is about 466.5132356715.

The spelling of 101529421 in words is "one hundred one million, five hundred twenty-nine thousand, four hundred twenty-one".