1157146 has 4 divisors (see below), whose sum is σ = 1735722. Its totient is φ = 578572.

The previous prime is 1157131. The next prime is 1157159. The reversal of 1157146 is 6417511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6417511 = 839 ⋅7649.

It can be written as a sum of positive squares in only one way, i.e., 1155625 + 1521 = 1075^2 + 39^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1157146.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 289285 + ... + 289288.

2^1157146 is an apocalyptic number.

1157146 is a deficient number, since it is larger than the sum of its proper divisors (578576).

1157146 is an equidigital number, since it uses as much as digits as its factorization.

1157146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578575.

The product of its digits is 840, while the sum is 25.

The square root of 1157146 is about 1075.7072092349. The cubic root of 1157146 is about 104.9855157647.

The spelling of 1157146 in words is "one million, one hundred fifty-seven thousand, one hundred forty-six".