1540426 has 8 divisors (see below), whose sum is σ = 2317824. Its totient is φ = 767820.

The previous prime is 1540423. The next prime is 1540447. The reversal of 1540426 is 6240451.

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

It is a super-2 number, since 2×1540426² = 4745824522952, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1540397 and 1540406.

It is not an unprimeable number, because it can be changed into a prime (1540423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240 + ... + 1771.

It is an arithmetic number, because the mean of its divisors is an integer number (289728).

2^1540426 is an apocalyptic number.

1540426 is a deficient number, since it is larger than the sum of its proper divisors (777398).

1540426 is a wasteful number, since it uses less digits than its factorization.

1540426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2396.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1540426 is about 1241.1389930221. The cubic root of 1540426 is about 115.4906822065.

Adding to 1540426 its reverse (6240451), we get a palindrome (7780877).

The spelling of 1540426 in words is "one million, five hundred forty thousand, four hundred twenty-six".