1005420101 has 4 divisors (see below), whose sum is σ = 1149051552. Its totient is φ = 861788652.

The previous prime is 1005420083. The next prime is 1005420161. The reversal of 1005420101 is 1010245001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1005420101 - 2¹⁸ = 1005157957 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 (1005420161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71815715 + ... + 71815728.

It is an arithmetic number, because the mean of its divisors is an integer number (287262888).

Almost surely, 2^1005420101 is an apocalyptic number.

It is an amenable number.

1005420101 is a deficient number, since it is larger than the sum of its proper divisors (143631451).

1005420101 is an equidigital number, since it uses as much as digits as its factorization.

1005420101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143631450.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 1005420101 is about 31708.3601121219. The cubic root of 1005420101 is about 1001.8034459608.

Adding to 1005420101 its reverse (1010245001), we get a palindrome (2015665102).

The spelling of 1005420101 in words is "one billion, five million, four hundred twenty thousand, one hundred one".