1431427 has 4 divisors (see below), whose sum is σ = 1464760. Its totient is φ = 1398096.

The previous prime is 1431421. The next prime is 1431439. The reversal of 1431427 is 7241341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7241341 = 97 ⋅74653.

It is a cyclic number.

It is not a de Polignac number, because 1431427 - 2¹⁵ = 1398659 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1431398 and 1431407.

It is not an unprimeable number, because it can be changed into a prime (1431421) 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, 16602 + ... + 16687.

It is an arithmetic number, because the mean of its divisors is an integer number (366190).

2^1431427 is an apocalyptic number.

1431427 is a deficient number, since it is larger than the sum of its proper divisors (33333).

1431427 is an equidigital number, since it uses as much as digits as its factorization.

1431427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33332.

The product of its digits is 672, while the sum is 22.

The square root of 1431427 is about 1196.4225842068. The cubic root of 1431427 is about 112.6997799957.

Adding to 1431427 its reverse (7241341), we get a palindrome (8672768).

It can be divided in two parts, 14314 and 27, that added together give a palindrome (14341).

The spelling of 1431427 in words is "one million, four hundred thirty-one thousand, four hundred twenty-seven".