1305942472490 has 16 divisors (see below), whose sum is σ = 2373970674600. Its totient is φ = 517204939200.

The previous prime is 1305942472453. The next prime is 1305942472501. The reversal of 1305942472490 is 942742495031.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 956681566201 + 349260906289 = 978101^2 + 590983^2 .

It is an unprimeable number.

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, 646505165 + ... + 646507184.

Almost surely, 2^{1305942472490} is an apocalyptic number.

1305942472490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1305942472490 is a deficient number, since it is larger than the sum of its proper divisors (1068028202110).

1305942472490 is a wasteful number, since it uses less digits than its factorization.

1305942472490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1293012457.

The product of its (nonzero) digits is 2177280, while the sum is 50.

The spelling of 1305942472490 in words is "one trillion, three hundred five billion, nine hundred forty-two million, four hundred seventy-two thousand, four hundred ninety".