1143401129 has 8 divisors (see below), whose sum is σ = 1234888200. Its totient is φ = 1052418816.

The previous prime is 1143401053. The next prime is 1143401131. The reversal of 1143401129 is 9211043411.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 15784729 + 1127616400 = 3973^2 + 33580^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1143401129 - 2⁸ = 1143400873 is a prime.

It is a super-2 number, since 2×1143401129² = 2614732283596949282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1143401098 and 1143401107.

It is not an unprimeable number, because it can be changed into a prime (1143401429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121472 + ... + 130545.

It is an arithmetic number, because the mean of its divisors is an integer number (154361025).

Almost surely, 2^1143401129 is an apocalyptic number.

It is an amenable number.

1143401129 is a deficient number, since it is larger than the sum of its proper divisors (91487071).

1143401129 is a wasteful number, since it uses less digits than its factorization.

1143401129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252379.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1143401129 is about 33814.2148955140. The cubic root of 1143401129 is about 1045.6817751366.

The spelling of 1143401129 in words is "one billion, one hundred forty-three million, four hundred one thousand, one hundred twenty-nine".