1540045 has 32 divisors (see below), whose sum is σ = 2217600. Its totient is φ = 1016064.

The previous prime is 1540039. The next prime is 1540073. The reversal of 1540045 is 5400451.

It is a cyclic number.

It is not a de Polignac number, because 1540045 - 2⁷ = 1539917 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

1540045 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35794 + ... + 35836.

It is an arithmetic number, because the mean of its divisors is an integer number (69300).

2^1540045 is an apocalyptic number.

It is an amenable number.

1540045 is a deficient number, since it is larger than the sum of its proper divisors (677555).

1540045 is a wasteful number, since it uses less digits than its factorization.

1540045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 1540045 is about 1240.9854954833. The cubic root of 1540045 is about 115.4811598237.

Adding to 1540045 its reverse (5400451), we get a palindrome (6940496).

The spelling of 1540045 in words is "one million, five hundred forty thousand, forty-five".