1001420131 has 4 divisors (see below), whose sum is σ = 1001660392. Its totient is φ = 1001179872.

The previous prime is 1001420129. The next prime is 1001420159. The reversal of 1001420131 is 1310241001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1001420131 - 2¹ = 1001420129 is a prime.

It is a super-2 number, since 2×1001420131² = 2005684557544114322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001420111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113766 + ... + 122251.

It is an arithmetic number, because the mean of its divisors is an integer number (250415098).

Almost surely, 2^1001420131 is an apocalyptic number.

1001420131 is a deficient number, since it is larger than the sum of its proper divisors (240261).

1001420131 is an equidigital number, since it uses as much as digits as its factorization.

1001420131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240260.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1001420131 is about 31645.2228780269. Note that the first 3 decimals coincide. The cubic root of 1001420131 is about 1000.4731530908.

Adding to 1001420131 its reverse (1310241001), we get a palindrome (2311661132).

The spelling of 1001420131 in words is "one billion, one million, four hundred twenty thousand, one hundred thirty-one".