1142431 has 2 divisors, whose sum is σ = 1142432. Its totient is φ = 1142430.

The previous prime is 1142423. The next prime is 1142473. The reversal of 1142431 is 1342411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1142431 - 2³ = 1142423 is a prime.

It is a super-2 number, since 2×1142431² = 2610297179522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1142131) 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 as a sum of consecutive naturals, namely, 571215 + 571216.

It is an arithmetic number, because the mean of its divisors is an integer number (571216).

2^1142431 is an apocalyptic number.

1142431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142431 is an equidigital number, since it uses as much as digits as its factorization.

1142431 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1142431 is about 1068.8456389956. The cubic root of 1142431 is about 104.5385952079.

Adding to 1142431 its reverse (1342411), we get a palindrome (2484842).

It can be divided in two parts, 114243 and 1, that added together give a square (114244 = 338²).

The spelling of 1142431 in words is "one million, one hundred forty-two thousand, four hundred thirty-one".