1540245422 has 4 divisors (see below), whose sum is σ = 2310368136. Its totient is φ = 770122710.

The previous prime is 1540245409. The next prime is 1540245433. The reversal of 1540245422 is 2245420451.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385061354 + ... + 385061357.

It is an arithmetic number, because the mean of its divisors is an integer number (577592034).

Almost surely, 2^1540245422 is an apocalyptic number.

1540245422 is a deficient number, since it is larger than the sum of its proper divisors (770122714).

1540245422 is an equidigital number, since it uses as much as digits as its factorization.

1540245422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770122713.

The product of its (nonzero) digits is 12800, while the sum is 29.

The square root of 1540245422 is about 39245.9605819503. The cubic root of 1540245422 is about 1154.8616919274.

Adding to 1540245422 its reverse (2245420451), we get a palindrome (3785665873).

The spelling of 1540245422 in words is "one billion, five hundred forty million, two hundred forty-five thousand, four hundred twenty-two".