1142231401 has 2 divisors, whose sum is σ = 1142231402. Its totient is φ = 1142231400.

The previous prime is 1142231393. The next prime is 1142231407. The reversal of 1142231401 is 1041322411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 953883225 + 188348176 = 30885^2 + 13724^2 .

It is an emirp because it is prime and its reverse (1041322411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1142231401 - 2³ = 1142231393 is a prime.

It is not a weakly prime, because it can be changed into another prime (1142231407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571115700 + 571115701.

It is an arithmetic number, because the mean of its divisors is an integer number (571115701).

Almost surely, 2^1142231401 is an apocalyptic number.

It is an amenable number.

1142231401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142231401 is an equidigital number, since it uses as much as digits as its factorization.

1142231401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1142231401 is about 33796.9140751045. The cubic root of 1142231401 is about 1045.3250672510.

Adding to 1142231401 its reverse (1041322411), we get a palindrome (2183553812).

The spelling of 1142231401 in words is "one billion, one hundred forty-two million, two hundred thirty-one thousand, four hundred one".