1156427 has 2 divisors, whose sum is σ = 1156428. Its totient is φ = 1156426.

The previous prime is 1156423. The next prime is 1156429. The reversal of 1156427 is 7246511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1156427 - 2² = 1156423 is a prime.

Together with 1156429, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1156396 and 1156405.

It is not a weakly prime, because it can be changed into another prime (1156423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578213 + 578214.

It is an arithmetic number, because the mean of its divisors is an integer number (578214).

2^1156427 is an apocalyptic number.

1156427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1156427 is an equidigital number, since it uses as much as digits as its factorization.

1156427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1680, while the sum is 26.

The square root of 1156427 is about 1075.3729585590. The cubic root of 1156427 is about 104.9637667876.

The spelling of 1156427 in words is "one million, one hundred fifty-six thousand, four hundred twenty-seven".