1151642 has 4 divisors (see below), whose sum is σ = 1727466. Its totient is φ = 575820.

The previous prime is 1151639. The next prime is 1151651. The reversal of 1151642 is 2461511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2461511 = 13 ⋅189347.

It can be written as a sum of positive squares in only one way, i.e., 1125721 + 25921 = 1061^2 + 161^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 287909 + ... + 287912.

2^1151642 is an apocalyptic number.

1151642 is a deficient number, since it is larger than the sum of its proper divisors (575824).

1151642 is an equidigital number, since it uses as much as digits as its factorization.

1151642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575823.

The product of its digits is 240, while the sum is 20.

The square root of 1151642 is about 1073.1458428378. The cubic root of 1151642 is about 104.8187955528.

The spelling of 1151642 in words is "one million, one hundred fifty-one thousand, six hundred forty-two".