1305401245 has 16 divisors (see below), whose sum is σ = 1583670528. Its totient is φ = 1032915520.

The previous prime is 1305401233. The next prime is 1305401249. The reversal of 1305401245 is 5421045031.

It is a happy number.

It is not a de Polignac number, because 1305401245 - 2¹³ = 1305393053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305401249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204492 + ... + 210778.

It is an arithmetic number, because the mean of its divisors is an integer number (98979408).

Almost surely, 2^1305401245 is an apocalyptic number.

It is an amenable number.

1305401245 is a deficient number, since it is larger than the sum of its proper divisors (278269283).

1305401245 is a wasteful number, since it uses less digits than its factorization.

1305401245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6740.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1305401245 is about 36130.3369068156. The cubic root of 1305401245 is about 1092.9023023229.

Adding to 1305401245 its reverse (5421045031), we get a palindrome (6726446276).

The spelling of 1305401245 in words is "one billion, three hundred five million, four hundred one thousand, two hundred forty-five".