1143407 has 2 divisors, whose sum is σ = 1143408. Its totient is φ = 1143406.

The previous prime is 1143391. The next prime is 1143433. The reversal of 1143407 is 7043411.

It is a weak prime.

It is an emirp because it is prime and its reverse (7043411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1143407 - 2⁴ = 1143391 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1143487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571703 + 571704.

It is an arithmetic number, because the mean of its divisors is an integer number (571704).

2^1143407 is an apocalyptic number.

1143407 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143407 is an equidigital number, since it uses as much as digits as its factorization.

1143407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 1143407 is about 1069.3021088542. The cubic root of 1143407 is about 104.5683564881.

Adding to 1143407 its reverse (7043411), we get a palindrome (8186818).

The spelling of 1143407 in words is "one million, one hundred forty-three thousand, four hundred seven".