1155003197442 has 128 divisors (see below), whose sum is σ = 2391452937216. Its totient is φ = 371769495552.

The previous prime is 1155003197423. The next prime is 1155003197443. The reversal of 1155003197442 is 2447913005511.

It is a super-2 number, since 2×1155003197442² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1155003197394 and 1155003197403.

It is not an unprimeable number, because it can be changed into a prime (1155003197443) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2607230473 + ... + 2607230915.

It is an arithmetic number, because the mean of its divisors is an integer number (18683226072).

Almost surely, 2^{1155003197442} is an apocalyptic number.

1155003197442 is an abundant number, since it is smaller than the sum of its proper divisors (1236449739774).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1155003197442 is a wasteful number, since it uses less digits than its factorization.

1155003197442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1184.

The product of its (nonzero) digits is 151200, while the sum is 42.

The spelling of 1155003197442 in words is "one trillion, one hundred fifty-five billion, three million, one hundred ninety-seven thousand, four hundred forty-two".