1172345042 has 54 divisors (see below), whose sum is σ = 2025806391. Its totient is φ = 508431000.

The previous prime is 1172345023. The next prime is 1172345093. The reversal of 1172345042 is 2405432711.

It can be written as a sum of positive squares in only one way, i.e., 586172521 + 586172521 = 24211^2 + 24211^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=24211.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1172344996 and 1172345014.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 16511867 + ... + 16511937.

Almost surely, 2^1172345042 is an apocalyptic number.

1172345042 is a deficient number, since it is larger than the sum of its proper divisors (853461349).

1172345042 is an equidigital number, since it uses as much as digits as its factorization.

1172345042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 1172345042 is about 34239.5245586150. The cubic root of 1172345042 is about 1054.4317723501.

Adding to 1172345042 its reverse (2405432711), we get a palindrome (3577777753).

It can be divided in two parts, 11723 and 45042, that added together give a palindrome (56765).

The spelling of 1172345042 in words is "one billion, one hundred seventy-two million, three hundred forty-five thousand, forty-two".