1245540477 has 8 divisors (see below), whose sum is σ = 1667183616. Its totient is φ = 827128832.

The previous prime is 1245540463. The next prime is 1245540481. The reversal of 1245540477 is 7740455421.

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

It is a cyclic number.

It is not a de Polignac number, because 1245540477 - 2⁷ = 1245540349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245540407) 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, 806973 + ... + 808514.

It is an arithmetic number, because the mean of its divisors is an integer number (208397952).

Almost surely, 2^1245540477 is an apocalyptic number.

It is an amenable number.

1245540477 is a deficient number, since it is larger than the sum of its proper divisors (421643139).

1245540477 is a wasteful number, since it uses less digits than its factorization.

1245540477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1615747.

The product of its (nonzero) digits is 156800, while the sum is 39.

The square root of 1245540477 is about 35292.2155297737. The cubic root of 1245540477 is about 1075.9347851028.

Adding to 1245540477 its reverse (7740455421), we get a palindrome (8985995898).

The spelling of 1245540477 in words is "one billion, two hundred forty-five million, five hundred forty thousand, four hundred seventy-seven".