1540082 has 4 divisors (see below), whose sum is σ = 2310126. Its totient is φ = 770040.

The previous prime is 1540079. The next prime is 1540087. The reversal of 1540082 is 2800451.

It is a Cunningham number, because it is equal to 1241²+1.

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

It can be written as a sum of positive squares in only one way, i.e., 1540081 + 1 = 1241^2 + 1^2 .

It is a super-3 number, since 3×1540082³ = 10958542333996294104, which contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1540087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385019 + ... + 385022.

2^1540082 is an apocalyptic number.

1540082 is a deficient number, since it is larger than the sum of its proper divisors (770044).

1540082 is an equidigital number, since it uses as much as digits as its factorization.

1540082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770043.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 1540082 is about 1241.0004029008. Note that the first 3 decimals coincide. The cubic root of 1540082 is about 115.4820846384.

The spelling of 1540082 in words is "one million, five hundred forty thousand, eighty-two".