1154194671442 has 24 divisors (see below), whose sum is σ = 1760485252500. Its totient is φ = 567525104640.

The previous prime is 1154194671401. The next prime is 1154194671463. The reversal of 1154194671442 is 2441764914511.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 248174345241 + 906020326201 = 498171^2 + 951851^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47981434 + ... + 48005482.

Almost surely, 2^{1154194671442} is an apocalyptic number.

1154194671442 is a deficient number, since it is larger than the sum of its proper divisors (606290581058).

1154194671442 is an equidigital number, since it uses as much as digits as its factorization.

1154194671442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30622 (or 30561 counting only the distinct ones).

The product of its digits is 967680, while the sum is 49.

The spelling of 1154194671442 in words is "one trillion, one hundred fifty-four billion, one hundred ninety-four million, six hundred seventy-one thousand, four hundred forty-two".