1420202131 has 4 divisors (see below), whose sum is σ = 1424739832. Its totient is φ = 1415664432.

The previous prime is 1420202089. The next prime is 1420202141. The reversal of 1420202131 is 1312020241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1312020241 = 7 ⋅187431463.

It is a cyclic number.

It is not a de Polignac number, because 1420202131 - 2¹⁵ = 1420169363 is a prime.

It is a super-2 number, since 2×1420202131² = 4033948185793882322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1420202141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2268381 + ... + 2269006.

It is an arithmetic number, because the mean of its divisors is an integer number (356184958).

Almost surely, 2^1420202131 is an apocalyptic number.

1420202131 is a deficient number, since it is larger than the sum of its proper divisors (4537701).

1420202131 is an equidigital number, since it uses as much as digits as its factorization.

1420202131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4537700.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1420202131 is about 37685.5692672938. The cubic root of 1420202131 is about 1124.0441938673.

Adding to 1420202131 its reverse (1312020241), we get a palindrome (2732222372).

The spelling of 1420202131 in words is "one billion, four hundred twenty million, two hundred two thousand, one hundred thirty-one".