1540520234 has 16 divisors (see below), whose sum is σ = 2588983776. Its totient is φ = 681310800.

The previous prime is 1540520173. The next prime is 1540520239. The reversal of 1540520234 is 4320250451.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1540520239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 945452 + ... + 947079.

It is an arithmetic number, because the mean of its divisors is an integer number (161811486).

Almost surely, 2^1540520234 is an apocalyptic number.

1540520234 is a deficient number, since it is larger than the sum of its proper divisors (1048463542).

1540520234 is a wasteful number, since it uses less digits than its factorization.

1540520234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1892581.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 1540520234 is about 39249.4615759248. The cubic root of 1540520234 is about 1154.9303716701.

Adding to 1540520234 its reverse (4320250451), we get a palindrome (5860770685).

The spelling of 1540520234 in words is "one billion, five hundred forty million, five hundred twenty thousand, two hundred thirty-four".