1002420101 has 8 divisors (see below), whose sum is σ = 1006599000. Its totient is φ = 998249472.

The previous prime is 1002420077. The next prime is 1002420127. The reversal of 1002420101 is 1010242001.

It can be written as a sum of positive squares in 4 ways, for example, as 172922500 + 829497601 = 13150^2 + 28801^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1002420101 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 (1002422101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363275 + ... + 366023.

It is an arithmetic number, because the mean of its divisors is an integer number (125824875).

Almost surely, 2^1002420101 is an apocalyptic number.

It is an amenable number.

1002420101 is a deficient number, since it is larger than the sum of its proper divisors (4178899).

1002420101 is a wasteful number, since it uses less digits than its factorization.

1002420101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4135.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1002420101 is about 31661.0186349081. The cubic root of 1002420101 is about 1000.8060504415.

Adding to 1002420101 its reverse (1010242001), we get a palindrome (2012662102).

The spelling of 1002420101 in words is "one billion, two million, four hundred twenty thousand, one hundred one".