1156421467 has 4 divisors (see below), whose sum is σ = 1160140176. Its totient is φ = 1152702760.

The previous prime is 1156421459. The next prime is 1156421471. The reversal of 1156421467 is 7641246511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1156421467 - 2³ = 1156421459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1156425467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1858888 + ... + 1859509.

It is an arithmetic number, because the mean of its divisors is an integer number (290035044).

Almost surely, 2^1156421467 is an apocalyptic number.

1156421467 is a deficient number, since it is larger than the sum of its proper divisors (3718709).

1156421467 is an equidigital number, since it uses as much as digits as its factorization.

1156421467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3718708.

The product of its digits is 40320, while the sum is 37.

The square root of 1156421467 is about 34006.1974792831. The cubic root of 1156421467 is about 1049.6359938539.

Adding to 1156421467 its reverse (7641246511), we get a palindrome (8797667978).

The spelling of 1156421467 in words is "one billion, one hundred fifty-six million, four hundred twenty-one thousand, four hundred sixty-seven".