1305442501 has 24 divisors (see below), whose sum is σ = 1476849024. Its totient is φ = 1152360000.

The previous prime is 1305442459. The next prime is 1305442513. The reversal of 1305442501 is 1052445031.

It is a happy number.

It is not a de Polignac number, because 1305442501 - 2¹³ = 1305434309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305442561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1343946 + ... + 1344916.

It is an arithmetic number, because the mean of its divisors is an integer number (61535376).

Almost surely, 2^1305442501 is an apocalyptic number.

1305442501 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1305442501 is a deficient number, since it is larger than the sum of its proper divisors (171406523).

1305442501 is a wasteful number, since it uses less digits than its factorization.

1305442501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305 (or 1294 counting only the distinct ones).

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

The square root of 1305442501 is about 36130.9078352593. The cubic root of 1305442501 is about 1092.9138155908.

Adding to 1305442501 its reverse (1052445031), we get a palindrome (2357887532).

It can be divided in two parts, 13054 and 42501, that added together give a palindrome (55555).

The spelling of 1305442501 in words is "one billion, three hundred five million, four hundred forty-two thousand, five hundred one".