1156398942 has 8 divisors (see below), whose sum is σ = 2312797896. Its totient is φ = 385466312.

The previous prime is 1156398941. The next prime is 1156398959. The reversal of 1156398942 is 2498936511.

It is a sphenic number, since it is the product of 3 distinct primes.

1156398942 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1156398891 and 1156398900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156398941) 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 3 ways as a sum of consecutive naturals, for example, 96366573 + ... + 96366584.

It is an arithmetic number, because the mean of its divisors is an integer number (289099737).

Almost surely, 2^1156398942 is an apocalyptic number.

1156398942 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1156398942 is a wasteful number, since it uses less digits than its factorization.

1156398942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192733162.

The product of its digits is 466560, while the sum is 48.

The square root of 1156398942 is about 34005.8662880392. The cubic root of 1156398942 is about 1049.6291788056.

The spelling of 1156398942 in words is "one billion, one hundred fifty-six million, three hundred ninety-eight thousand, nine hundred forty-two".