1245432051 has 16 divisors (see below), whose sum is σ = 1845954720. Its totient is φ = 829896480.

The previous prime is 1245432047. The next prime is 1245432061. The reversal of 1245432051 is 1502345421.

1245432051 is a `hidden beast` number, since 1 + 2 + 454 + 3 + 205 + 1 = 666.

It is not a de Polignac number, because 1245432051 - 2² = 1245432047 is a prime.

It is a super-2 number, since 2×1245432051² = 3102201987316133202, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1245432061) 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 15 ways as a sum of consecutive naturals, for example, 54601 + ... + 73973.

It is an arithmetic number, because the mean of its divisors is an integer number (115372170).

Almost surely, 2^1245432051 is an apocalyptic number.

1245432051 is a deficient number, since it is larger than the sum of its proper divisors (600522669).

1245432051 is a wasteful number, since it uses less digits than its factorization.

1245432051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21763 (or 21757 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 1245432051 is about 35290.6793785555. The cubic root of 1245432051 is about 1075.9035636659.

Adding to 1245432051 its reverse (1502345421), we get a palindrome (2747777472).

The spelling of 1245432051 in words is "one billion, two hundred forty-five million, four hundred thirty-two thousand, fifty-one".