1540430 has 8 divisors (see below), whose sum is σ = 2772792. Its totient is φ = 616168.

The previous prime is 1540423. The next prime is 1540447. The reversal of 1540430 is 340451.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1540399 and 1540408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77012 + ... + 77031.

It is an arithmetic number, because the mean of its divisors is an integer number (346599).

2^1540430 is an apocalyptic number.

1540430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1540430 is a deficient number, since it is larger than the sum of its proper divisors (1232362).

1540430 is a wasteful number, since it uses less digits than its factorization.

1540430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154050.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 1540430 is about 1241.1406044442. The cubic root of 1540430 is about 115.4907821707.

Adding to 1540430 its reverse (340451), we get a palindrome (1880881).

The spelling of 1540430 in words is "one million, five hundred forty thousand, four hundred thirty".