1402431 has 4 divisors (see below), whose sum is σ = 1869912. Its totient is φ = 934952.

The previous prime is 1402421. The next prime is 1402439. The reversal of 1402431 is 1342041.

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 1402431 - 2⁵ = 1402399 is a prime.

It is a super-2 number, since 2×1402431² = 3933625419522, which contains 22 as substring.

It is a D-number.

1402431 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1402431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1402439) 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, 233736 + ... + 233741.

It is an arithmetic number, because the mean of its divisors is an integer number (467478).

2^1402431 is an apocalyptic number.

1402431 is a deficient number, since it is larger than the sum of its proper divisors (467481).

1402431 is an equidigital number, since it uses as much as digits as its factorization.

1402431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467480.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1402431 is about 1184.2427960516. The cubic root of 1402431 is about 111.9336075473.

Adding to 1402431 its reverse (1342041), we get a palindrome (2744472).

The spelling of 1402431 in words is "one million, four hundred two thousand, four hundred thirty-one".