1170142987 has 12 divisors (see below), whose sum is σ = 1333769880. Its totient is φ = 1023280128.

The previous prime is 1170142979. The next prime is 1170142991. The reversal of 1170142987 is 7892410711.

It is not a de Polignac number, because 1170142987 - 2³ = 1170142979 is a prime.

It is a super-2 number, since 2×1170142987² = 2738469220050564338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1170142907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 178998 + ... + 185419.

It is an arithmetic number, because the mean of its divisors is an integer number (111147490).

Almost surely, 2^1170142987 is an apocalyptic number.

1170142987 is a deficient number, since it is larger than the sum of its proper divisors (163626893).

1170142987 is a wasteful number, since it uses less digits than its factorization.

1170142987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364462 (or 364449 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 40.

The square root of 1170142987 is about 34207.3528207022. The cubic root of 1170142987 is about 1053.7711670475.

The spelling of 1170142987 in words is "one billion, one hundred seventy million, one hundred forty-two thousand, nine hundred eighty-seven".