1540145424 has 80 divisors (see below), whose sum is σ = 4097253632. Its totient is φ = 498161664.

The previous prime is 1540145423. The next prime is 1540145429. The reversal of 1540145424 is 4245410451.

It is a junction number, because it is equal to n+sod(n) for n = 1540145391 and 1540145400.

It is not an unprimeable number, because it can be changed into a prime (1540145423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 821352 + ... + 823224.

Almost surely, 2^1540145424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1540145424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2048626816).

1540145424 is an abundant number, since it is smaller than the sum of its proper divisors (2557108208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1540145424 is a wasteful number, since it uses less digits than its factorization.

1540145424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2384 (or 2378 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

The square root of 1540145424 is about 39244.6865702862. The cubic root of 1540145424 is about 1154.8366988630.

Adding to 1540145424 its reverse (4245410451), we get a palindrome (5785555875).

The spelling of 1540145424 in words is "one billion, five hundred forty million, one hundred forty-five thousand, four hundred twenty-four".