1142857145 has 8 divisors (see below), whose sum is σ = 1373124480. Its totient is φ = 913155120.

The previous prime is 1142857141. The next prime is 1142857171. The reversal of 1142857145 is 5417582411.

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

It is not a de Polignac number, because 1142857145 - 2² = 1142857141 is a prime.

It is a super-2 number, since 2×1142857145² = 2612244907755102050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1142857099 and 1142857108.

It is not an unprimeable number, because it can be changed into a prime (1142857141) 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, 136865 + ... + 144974.

It is an arithmetic number, because the mean of its divisors is an integer number (171640560).

Almost surely, 2^1142857145 is an apocalyptic number.

It is an amenable number.

1142857145 is a deficient number, since it is larger than the sum of its proper divisors (230267335).

1142857145 is an equidigital number, since it uses as much as digits as its factorization.

1142857145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282655.

The product of its digits is 44800, while the sum is 38.

The square root of 1142857145 is about 33806.1702208339. The cubic root of 1142857145 is about 1045.5159178029.

The spelling of 1142857145 in words is "one billion, one hundred forty-two million, eight hundred fifty-seven thousand, one hundred forty-five".