1306990140 has 48 divisors (see below), whose sum is σ = 3679821600. Its totient is φ = 346602240.

The previous prime is 1306990121. The next prime is 1306990193. The reversal of 1306990140 is 410996031.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 49315 + ... + 71034.

It is an arithmetic number, because the mean of its divisors is an integer number (76662950).

Almost surely, 2^1306990140 is an apocalyptic number.

1306990140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1306990140 is an abundant number, since it is smaller than the sum of its proper divisors (2372831460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1306990140 is a wasteful number, since it uses less digits than its factorization.

1306990140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120542 (or 120540 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 1306990140 is about 36152.3185978438. The cubic root of 1306990140 is about 1093.3455384403.

The spelling of 1306990140 in words is "one billion, three hundred six million, nine hundred ninety thousand, one hundred forty".