1156420046 has 4 divisors (see below), whose sum is σ = 1734630072. Its totient is φ = 578210022.

The previous prime is 1156420033. The next prime is 1156420049. The reversal of 1156420046 is 6400246511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6400246511 = 223 ⋅28700657.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156420049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 289105010 + ... + 289105013.

It is an arithmetic number, because the mean of its divisors is an integer number (433657518).

Almost surely, 2^1156420046 is an apocalyptic number.

1156420046 is a deficient number, since it is larger than the sum of its proper divisors (578210026).

1156420046 is an equidigital number, since it uses as much as digits as its factorization.

1156420046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578210025.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 1156420046 is about 34006.1765860263. The cubic root of 1156420046 is about 1049.6355639260.

Adding to 1156420046 its reverse (6400246511), we get a palindrome (7556666557).

The spelling of 1156420046 in words is "one billion, one hundred fifty-six million, four hundred twenty thousand, forty-six".