1420131243 has 16 divisors (see below), whose sum is σ = 1913737760. Its totient is φ = 936665856.

The previous prime is 1420131233. The next prime is 1420131257. The reversal of 1420131243 is 3421310241.

It is not a de Polignac number, because 1420131243 - 2⁵ = 1420131211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1420131203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244671 + ... + 250407.

It is an arithmetic number, because the mean of its divisors is an integer number (119608610).

Almost surely, 2^1420131243 is an apocalyptic number.

1420131243 is a deficient number, since it is larger than the sum of its proper divisors (493606517).

1420131243 is a wasteful number, since it uses less digits than its factorization.

1420131243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6606.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1420131243 is about 37684.6287363960. The cubic root of 1420131243 is about 1124.0254917007.

Adding to 1420131243 its reverse (3421310241), we get a palindrome (4841441484).

The spelling of 1420131243 in words is "one billion, four hundred twenty million, one hundred thirty-one thousand, two hundred forty-three".