1540024427 has 2 divisors, whose sum is σ = 1540024428. Its totient is φ = 1540024426.

The previous prime is 1540024399. The next prime is 1540024429. The reversal of 1540024427 is 7244200451.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1540024427 - 2¹⁸ = 1539762283 is a prime.

Together with 1540024429, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1540024427.

It is not a weakly prime, because it can be changed into another prime (1540024429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 770012213 + 770012214.

It is an arithmetic number, because the mean of its divisors is an integer number (770012214).

Almost surely, 2^1540024427 is an apocalyptic number.

1540024427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1540024427 is an equidigital number, since it uses as much as digits as its factorization.

1540024427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8960, while the sum is 29.

The square root of 1540024427 is about 39243.1449682617. The cubic root of 1540024427 is about 1154.8064559537.

Adding to 1540024427 its reverse (7244200451), we get a palindrome (8784224878).

It can be divided in two parts, 1540024 and 427, that added together give a palindrome (1540451).

The spelling of 1540024427 in words is "one billion, five hundred forty million, twenty-four thousand, four hundred twenty-seven".