1245286940 has 48 divisors (see below), whose sum is σ = 2708264160. Its totient is φ = 480679680.

The previous prime is 1245286937. The next prime is 1245286951. The reversal of 1245286940 is 496825421.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55031 + ... + 74289.

It is an arithmetic number, because the mean of its divisors is an integer number (56422170).

Almost surely, 2^1245286940 is an apocalyptic number.

1245286940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1245286940 is an abundant number, since it is smaller than the sum of its proper divisors (1462977220).

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

1245286940 is a wasteful number, since it uses less digits than its factorization.

1245286940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19382 (or 19380 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 1245286940 is about 35288.6233792139. The cubic root of 1245286940 is about 1075.8617758901.

The spelling of 1245286940 in words is "one billion, two hundred forty-five million, two hundred eighty-six thousand, nine hundred forty".