1142431129 has 16 divisors (see below), whose sum is σ = 1368304000. Its totient is φ = 952750512.

The previous prime is 1142431117. The next prime is 1142431139. The reversal of 1142431129 is 9211342411.

It is not a de Polignac number, because 1142431129 - 2²⁹ = 605560217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1142431097 and 1142431106.

It is not an unprimeable number, because it can be changed into a prime (1142431139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32319 + ... + 57700.

It is an arithmetic number, because the mean of its divisors is an integer number (85519000).

Almost surely, 2^1142431129 is an apocalyptic number.

It is an amenable number.

1142431129 is a deficient number, since it is larger than the sum of its proper divisors (225872871).

1142431129 is an frugal number, since it uses more digits than its factorization.

1142431129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90077 (or 90063 counting only the distinct ones).

The product of its digits is 1728, while the sum is 28.

The square root of 1142431129 is about 33799.8687719346. The cubic root of 1142431129 is about 1045.3859914260.

The spelling of 1142431129 in words is "one billion, one hundred forty-two million, four hundred thirty-one thousand, one hundred twenty-nine".