1097427 has 4 divisors (see below), whose sum is σ = 1463240. Its totient is φ = 731616.

The previous prime is 1097423. The next prime is 1097441. The reversal of 1097427 is 7247901.

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

It is not a de Polignac number, because 1097427 - 2² = 1097423 is a prime.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1097394 and 1097403.

It is not an unprimeable number, because it can be changed into a prime (1097423) 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, 182902 + ... + 182907.

It is an arithmetic number, because the mean of its divisors is an integer number (365810).

2^1097427 is an apocalyptic number.

1097427 is a deficient number, since it is larger than the sum of its proper divisors (365813).

1097427 is an equidigital number, since it uses as much as digits as its factorization.

1097427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365812.

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 1097427 is about 1047.5815004094. The cubic root of 1097427 is about 103.1474621410.

The spelling of 1097427 in words is "one million, ninety-seven thousand, four hundred twenty-seven".