101030421 has 16 divisors (see below), whose sum is σ = 140967936. Its totient is φ = 64240176.

The previous prime is 101030417. The next prime is 101030441. The reversal of 101030421 is 124030101.

It is a happy number.

It is not a de Polignac number, because 101030421 - 2² = 101030417 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 101030397 and 101030406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101030441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24516 + ... + 28338.

It is an arithmetic number, because the mean of its divisors is an integer number (8810496).

Almost surely, 2^101030421 is an apocalyptic number.

It is an amenable number.

101030421 is a deficient number, since it is larger than the sum of its proper divisors (39937515).

101030421 is a wasteful number, since it uses less digits than its factorization.

101030421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4232.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 101030421 is about 10051.3890084903. The cubic root of 101030421 is about 465.7477021550.

Adding to 101030421 its reverse (124030101), we get a palindrome (225060522).

The spelling of 101030421 in words is "one hundred one million, thirty thousand, four hundred twenty-one".