1144257842 has 32 divisors (see below), whose sum is σ = 2114418432. Its totient is φ = 452257344.

The previous prime is 1144257827. The next prime is 1144257871. The reversal of 1144257842 is 2487524411.

It is a junction number, because it is equal to n+sod(n) for n = 1144257796 and 1144257805.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262283 + ... + 266609.

It is an arithmetic number, because the mean of its divisors is an integer number (66075576).

Almost surely, 2^1144257842 is an apocalyptic number.

1144257842 is a deficient number, since it is larger than the sum of its proper divisors (970160590).

1144257842 is a wasteful number, since it uses less digits than its factorization.

1144257842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5802.

The product of its digits is 71680, while the sum is 38.

The square root of 1144257842 is about 33826.8804650976. The cubic root of 1144257842 is about 1045.9428749663.

The spelling of 1144257842 in words is "one billion, one hundred forty-four million, two hundred fifty-seven thousand, eight hundred forty-two".